forked from docs/doc-exports
1442 lines
57 KiB
JSON
1442 lines
57 KiB
JSON
[
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Service Overview",
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"uri":"dcs-pd-0326001.html",
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"doc_type":"usermanual",
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"p_code":"",
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"code":"1"
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},
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{
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"desc":"Distributed Cache Service (DCS) is an online, distributed, in-memory cache service compatible with Redis. It is reliable, scalable, usable out of the box, and easy to man",
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"product_code":"dcs",
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"title":"What Is DCS?",
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"uri":"en-us_topic_0054235826.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"2"
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},
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{
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"desc":"Many large-scale e-commerce websites and video streaming and gaming applications require fast access to large amounts of data that has simple data structures and does not",
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"product_code":"dcs",
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"title":"Application Scenarios",
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"uri":"dcs-pd-0326002.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"3"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"DCS Instance Types",
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"uri":"dcs-pd-200312001.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"4"
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},
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{
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"desc":"Three Redis versions are available for single-node DCS Redis instances: Redis 3.0, Redis 4.0, and Redis 5.0.Low system overhead and high QPSSingle-node instances do not s",
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"product_code":"dcs",
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"title":"Single-Node Redis",
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"uri":"CacheSingleNode.html",
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"doc_type":"usermanual",
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"p_code":"4",
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"code":"5"
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},
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{
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"desc":"This section describes master/standby DCS Redis instances. Three Redis versions are available for master/standby DCS Redis instances: Redis 3.0, Redis 4.0, and Redis 5.0.",
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"product_code":"dcs",
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"title":"Master/Standby Redis",
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"uri":"CacheMasterSlave.html",
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"doc_type":"usermanual",
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"p_code":"4",
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"code":"6"
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},
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{
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"desc":"DCS provides two types of cluster Redis instances: Proxy Cluster and Redis Cluster. Proxy Cluster uses Linux Virtual Server (LVS) and proxies. Redis Cluster is the native",
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"product_code":"dcs",
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"title":"Proxy Cluster Redis",
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"uri":"CacheCluster.html",
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"doc_type":"usermanual",
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"p_code":"4",
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"code":"7"
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},
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{
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"desc":"This section describes Redis Cluster DCS Redis 4.0 and 5.0 instances.The Redis Cluster instance type provided by DCS is compatible with the native Redis Cluster, which us",
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"product_code":"dcs",
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"title":"Redis Cluster",
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"uri":"CacheProxy.html",
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"doc_type":"usermanual",
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"p_code":"4",
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"code":"8"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"DCS Instance Specifications",
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"uri":"en-us_topic_0054235835.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"9"
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},
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{
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"desc":"This section describes DCS Redis 3.0 instance specifications, including the total memory, available memory, maximum number of connections allowed, maximum/assured bandwid",
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"product_code":"dcs",
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"title":"Redis 3.0 Instance Specifications",
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"uri":"dcs-pd-0916001.html",
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"doc_type":"usermanual",
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"p_code":"9",
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"code":"10"
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},
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{
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"desc":"This section describes DCS Redis 4.0 and 5.0 instance specifications, including the total memory, available memory, maximum number of connections allowed, maximum/assured",
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"product_code":"dcs",
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"title":"Redis 4.0 and 5.0 Instance Specifications",
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"uri":"dcs-pd-0916002.html",
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"doc_type":"usermanual",
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"p_code":"9",
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"code":"11"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Command Compatibility",
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"uri":"dcs-pd-200312003.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"12"
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},
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{
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"desc":"DCS for Redis 3.0 is developed based on Redis 3.0.7 and is compatible with open-source protocols and commands.This section describes DCS for Redis 3.0's compatibility wit",
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"product_code":"dcs",
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"title":"Redis 3.0 Commands",
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"uri":"dcs-pd-200713005.html",
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"doc_type":"usermanual",
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"p_code":"12",
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"code":"13"
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},
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{
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"desc":"DCS for Redis 4.0 is developed based on Redis 4.0.14 and is compatible with open-source protocols and commands.This section describes DCS for Redis 4.0's compatibility wi",
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"product_code":"dcs",
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"title":"Redis 4.0 Commands",
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"uri":"dcs-pd-200916001.html",
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"doc_type":"usermanual",
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"p_code":"12",
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"code":"14"
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},
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{
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"desc":"DCS for Redis 5.0 is developed based on Redis 5.0.9 and is compatible with open-source protocols and commands.This section describes DCS for Redis 5.0's compatibility wit",
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"product_code":"dcs",
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"title":"Redis 5.0 Commands",
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"uri":"dcs-pd-200813002.html",
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"doc_type":"usermanual",
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"p_code":"12",
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"code":"15"
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},
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{
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"desc":"Web CLI is a command line tool provided on the DCS console. This section describes Web CLI's compatibility with Redis commands, including supported and disabled commands.",
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"product_code":"dcs",
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"title":"Web CLI Commands",
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"uri":"dcs-pd-190826001.html",
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"doc_type":"usermanual",
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"p_code":"12",
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"code":"16"
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},
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{
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"desc":"Some Redis commands are supported by cluster DCS instances for multi-key operations in the same slot. For details, see Table 1.While running commands that take a long tim",
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"product_code":"dcs",
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"title":"Command Restrictions for Cluster Instances",
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"uri":"dcs-pd-200813003.html",
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"doc_type":"usermanual",
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"p_code":"12",
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"code":"17"
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},
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{
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"desc":"This section describes restrictions on some Redis commands.In case of a large amount of cached data, running the KEYS command may block the execution of other commands fo",
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"product_code":"dcs",
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"title":"Other Command Usage Restrictions",
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"uri":"dcs-pd-200813004.html",
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"doc_type":"usermanual",
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"p_code":"12",
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"code":"18"
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},
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{
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"desc":"Whether you use DCS as the frontend cache or backend data store, DCS is always ready to ensure data reliability and service availability. The following figure shows the e",
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"product_code":"dcs",
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"title":"HA and DR Policies",
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"uri":"GlobalDRPolicy.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"19"
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},
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{
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"desc":"When creating a DCS Redis instance, you can select the cache engine version and the instance type.VersionDCS supports Redis 3.0, 4.0, and 5.0. The following table describ",
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"product_code":"dcs",
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"title":"Comparing Redis Versions",
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"uri":"RedisDifference.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"20"
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},
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{
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"desc":"DCS supports single-node, master/standby, and cluster instances, ensuring high read/write performance and fast data access. It also supports various instance management o",
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"product_code":"dcs",
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"title":"Comparing DCS and Open-Source Cache Services",
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"uri":"dcs-pd-0326003.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"21"
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},
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{
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"desc":"An instance is the minimum resource unit provided by DCS.DCS supports the Redis cache engine, and single-node, master/standby, and cluster instance types. For each instan",
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"product_code":"dcs",
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"title":"Basic Concepts",
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"uri":"dcs-pd-200312004.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"22"
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},
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{
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"desc":"If you need to assign different permissions to employees in your enterprise to access your DCS resources, Identity and Access Management (IAM) is a good choice for fine-g",
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"product_code":"dcs",
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"title":"Permissions Management",
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"uri":"dcs-pd-210626001.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"23"
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},
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{
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"desc":"DCS is used together with other services, including VPC, ECS, IAM, Cloud Eye, CTS, and Object Storage Service (OBS).A VPC is an isolated virtual network environment on th",
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"product_code":"dcs",
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"title":"Related Services",
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"uri":"dcs-pd-0326006.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"24"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Accessing DCS",
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"uri":"en-us_topic_0054235836.html",
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"doc_type":"usermanual",
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"p_code":"1",
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"code":"25"
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},
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{
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"desc":"There are two ways to access DCS:Using the management consoleThe DCS provides a web-based management console. To launch the DCS console, create an account on the manageme",
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"product_code":"dcs",
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"title":"How to Access DCS",
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"uri":"en-us_topic_0054235837.html",
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"doc_type":"usermanual",
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"p_code":"25",
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"code":"26"
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},
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{
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"desc":"The public cloud system provides two types of user permissions by default: user management and resource management.User management refers to the management of users, user",
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"product_code":"dcs",
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"title":"User Permissions",
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"uri":"en-us_topic_0054247786.html",
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"doc_type":"usermanual",
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"p_code":"25",
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"code":"27"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Permissions Management",
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"uri":"dcs-ug-210626003.html",
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"doc_type":"usermanual",
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"p_code":"",
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"code":"28"
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},
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{
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"desc":"This chapter describes how to use IAM to implement fine-grained permissions control for your DCS resources. With IAM, you can:Create IAM users for employees based on your",
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"product_code":"dcs",
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"title":"Creating a User and Granting DCS Permissions",
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"uri":"dcs-ug-210626004.html",
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"doc_type":"usermanual",
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"p_code":"28",
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"code":"29"
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},
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{
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"desc":"Custom policies can be created to supplement the system-defined policies of DCS. For the actions that can be added for custom policies, see Permissions Policies and Suppo",
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"product_code":"dcs",
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"title":"DCS Custom Policies",
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"uri":"dcs-ug-210626005.html",
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"doc_type":"usermanual",
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"p_code":"28",
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"code":"30"
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},
|
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Getting Started",
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"uri":"dcs-ug-0326007.html",
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"doc_type":"usermanual",
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"p_code":"",
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"code":"31"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Creating an Instance",
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"uri":"dcs-ug-0312003.html",
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"doc_type":"usermanual",
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"p_code":"31",
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"code":"32"
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},
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{
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"desc":"Before creating a DCS instance, identify your requirements and complete the following preparations:Decide on the required cache engine version.Different Redis versions ha",
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"product_code":"dcs",
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"title":"Identifying Requirements",
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"uri":"PurchasePreparation.html",
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"doc_type":"usermanual",
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"p_code":"32",
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"code":"33"
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},
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{
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"desc":"To access DCS instances through a Virtual Private Cloud (VPC), create a VPC and configure security groups and subnets for it before using DCS. A VPC provides an isolated ",
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"product_code":"dcs",
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"title":"Preparing the Environment",
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"uri":"dcs-ug-0312004.html",
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"doc_type":"usermanual",
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"p_code":"32",
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"code":"34"
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},
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{
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"desc":"You can create one or more DCS Redis instances with the required computing capabilities and storage space based on service requirements.The system automatically schedules",
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"product_code":"dcs",
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"title":"Creating a DCS Redis Instance",
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"uri":"dcs-ug-0326008.html",
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"doc_type":"usermanual",
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"p_code":"32",
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"code":"35"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Accessing an Instance",
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"uri":"dcs-ug-0916002.html",
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"doc_type":"usermanual",
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"p_code":"31",
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"code":"36"
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},
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{
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"desc":"Access a DCS Redis instance through redis-cli on an ECS in the same VPC. For more information on how to use other Redis clients, visit https://redis.io/clients.Redis 3.0 ",
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"product_code":"dcs",
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"title":"Accessing a DCS Redis Instance Through redis-cli",
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"uri":"dcs-ug-0326009.html",
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"doc_type":"usermanual",
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"p_code":"36",
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"code":"37"
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},
|
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{
|
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Access in Different Languages",
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"uri":"dcs-ug-0512002.html",
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"doc_type":"usermanual",
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"p_code":"36",
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"code":"38"
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},
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{
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"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
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"product_code":"dcs",
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"title":"Java",
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"uri":"dcs-ug-211105003.html",
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"doc_type":"usermanual",
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"p_code":"38",
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"code":"39"
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},
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{
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"desc":"Access a DCS Redis instance through Jedis on an ECS in the same VPC. For more information on how to use other Redis clients, visit https://redis.io/clients.If a password ",
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"product_code":"dcs",
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"title":"Jedis",
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"uri":"dcs-ug-0713005.html",
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"doc_type":"usermanual",
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"p_code":"39",
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"code":"40"
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},
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{
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"desc":"Access a Redis Cluster instance through Lettuce on an ECS in the same VPC. For more information on how to use other Redis clients, visit https://redis.io/clients.If a pas",
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"product_code":"dcs",
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"title":"Lettuce",
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"uri":"dcs-ug-211011001.html",
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"doc_type":"usermanual",
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"p_code":"39",
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"code":"41"
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},
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{
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"desc":"Access a DCS Redis instance through Redisson on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.If a p",
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"product_code":"dcs",
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"title":"Redisson",
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"uri":"dcs-ug-211105004.html",
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"doc_type":"usermanual",
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"p_code":"39",
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"code":"42"
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},
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{
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"desc":"A DCS Redis instance has been created and is in the Running state.An ECS has been created. For details about how to create an ECS, see Elastic Cloud Server User Guide.If ",
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"product_code":"dcs",
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"title":"Lettuce Integration with Spring Boot",
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"uri":"dcs-ug-211203001.html",
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"doc_type":"usermanual",
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"p_code":"38",
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"code":"43"
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},
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{
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"desc":"Access a DCS Redis instance through redis-py on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.Use re",
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"product_code":"dcs",
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"title":"Clients in Python",
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"uri":"dcs-ug-0312011.html",
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"doc_type":"usermanual",
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"p_code":"38",
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"code":"44"
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},
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{
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"desc":"Access a DCS Redis instance through go-redis on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.A DCS ",
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"product_code":"dcs",
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"title":"go-redis",
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"uri":"dcs-ug-211105001.html",
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"doc_type":"usermanual",
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"p_code":"38",
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"code":"45"
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},
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{
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"desc":"Access a DCS Redis instance through hiredis on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.The ope",
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"product_code":"dcs",
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"title":"hiredis in C++",
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"uri":"dcs-ug-0312010.html",
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"doc_type":"usermanual",
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"p_code":"38",
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"code":"46"
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},
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{
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"desc":"Access a DCS Redis instance through C# Client StackExchange.Redis on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis of",
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"product_code":"dcs",
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"title":"C#",
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"uri":"dcs-ug-0312013.html",
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"doc_type":"usermanual",
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"p_code":"38",
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"code":"47"
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},
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{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"PHP",
|
|
"uri":"dcs-ug-211202001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"38",
|
|
"code":"48"
|
|
},
|
|
{
|
|
"desc":"Access a DCS Redis instance through phpredis on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.The op",
|
|
"product_code":"dcs",
|
|
"title":"phpredis",
|
|
"uri":"dcs-ug-0312009.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"48",
|
|
"code":"49"
|
|
},
|
|
{
|
|
"desc":"Access a DCS Redis instance through Predis on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.A DCS Re",
|
|
"product_code":"dcs",
|
|
"title":"Predis",
|
|
"uri":"dcs-ug-211202002.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"48",
|
|
"code":"50"
|
|
},
|
|
{
|
|
"desc":"Access a DCS Redis instance through Node.js on an ECS in the same VPC. For more information about how to use other Redis clients, visit the Redis official website.The ope",
|
|
"product_code":"dcs",
|
|
"title":"Node.js",
|
|
"uri":"dcs-ug-0312012.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"38",
|
|
"code":"51"
|
|
},
|
|
{
|
|
"desc":"Access a DCS Redis instance through Web CLI. This function is supported only by DCS Redis 4.0 and 5.0 instances, and not by DCS Redis 3.0 instances.Do not enter sensitive",
|
|
"product_code":"dcs",
|
|
"title":"Accessing a DCS Redis 4.0 or 5.0 Instance on the Console",
|
|
"uri":"dcs-ug-0312008.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"36",
|
|
"code":"52"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can view DCS instance details.Search by keyword.Enter a keyword to search.Enter a keyword to search.Select attributes and enter their keywords to ",
|
|
"product_code":"dcs",
|
|
"title":"Viewing Details of a DCS Instance",
|
|
"uri":"dcs-ug-0312016.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"31",
|
|
"code":"53"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Operation Guide",
|
|
"uri":"dcs-ug-0326010.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"",
|
|
"code":"54"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Operating DCS Instances",
|
|
"uri":"dcs-ug-0312015.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"54",
|
|
"code":"55"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can scale a DCS Redis instance to a larger or smaller capacity.Modify instance specifications during off-peak hours.If your DCS instances are too ",
|
|
"product_code":"dcs",
|
|
"title":"Modifying DCS Instance Specifications",
|
|
"uri":"dcs-ug-0326011.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"56"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can start one or multiple DCS instances at a time.This function is not supported by recent instances. You can only start old instances that have b",
|
|
"product_code":"dcs",
|
|
"title":"Starting DCS Instances",
|
|
"uri":"dcs-ug-0911001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"57"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can restart one or multiple DCS instances at a time.After a single-node DCS instance is restarted, data will be deleted from the instance.While a ",
|
|
"product_code":"dcs",
|
|
"title":"Restarting DCS Instances",
|
|
"uri":"dcs-ug-0326013.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"58"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can delete one or multiple DCS instances at a time. You can also delete all instance creation tasks that have failed to run.After a DCS instance i",
|
|
"product_code":"dcs",
|
|
"title":"Deleting DCS Instances",
|
|
"uri":"dcs-ug-0326014.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"59"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can manually switch the master and standby nodes of a DCS instance. This operation is used for special purposes, for example, releasing all servic",
|
|
"product_code":"dcs",
|
|
"title":"Performing a Master/Standby Switchover for a DCS Instance",
|
|
"uri":"dcs-ug-0312017.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"60"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can clear data only for DCS Redis 4.0 and 5.0 instances.Clearing instance data cannot be undone and cleared data cannot be recovered. Exercise cau",
|
|
"product_code":"dcs",
|
|
"title":"Clearing DCS Instance Data",
|
|
"uri":"dcs-ug-0312018.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"61"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can export DCS instance information in full to an Excel file.Click the export result displayed in the lower left corner of the page.",
|
|
"product_code":"dcs",
|
|
"title":"Exporting DCS Instance List",
|
|
"uri":"dcs-ug-0312019.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"62"
|
|
},
|
|
{
|
|
"desc":"After creating a DCS Redis 4.0 or 5.0 instance, you can rename the following critical commands: COMMAND, KEYS, FLUSHDB, FLUSHALL, and HGETALL.You can rename multiple comm",
|
|
"product_code":"dcs",
|
|
"title":"Command Renaming",
|
|
"uri":"dcs-ug-1009002.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"55",
|
|
"code":"63"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Managing DCS Instances",
|
|
"uri":"dcs-ug-0312022.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"54",
|
|
"code":"64"
|
|
},
|
|
{
|
|
"desc":"In most cases, different DCS instance management operations cannot proceed concurrently. If you initiate a new management operation while the current operation is in prog",
|
|
"product_code":"dcs",
|
|
"title":"Configuration Notice",
|
|
"uri":"dcs-ug-0312023.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"65"
|
|
},
|
|
{
|
|
"desc":"You can modify the configuration parameters of your DCS instance to optimize DCS performance based on your requirements.For example, if you do not need data persistence, ",
|
|
"product_code":"dcs",
|
|
"title":"Modifying Configuration Parameters",
|
|
"uri":"dcs-ug-0312024.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"66"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, after creating a DCS instance, you can modify the maintenance time window of the DCS instance on the instance's Basic Information page.At least one DC",
|
|
"product_code":"dcs",
|
|
"title":"Modifying Maintenance Time Window",
|
|
"uri":"dcs-ug-0312025.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"67"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, after creating a DCS instance, you can modify the security group of the DCS instance on the instance's Basic Information page.You can modify the secur",
|
|
"product_code":"dcs",
|
|
"title":"Modifying the Security Group",
|
|
"uri":"dcs-ug-0312026.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"68"
|
|
},
|
|
{
|
|
"desc":"After you initiate certain instance operations such as modifying instance specifications and changing or resetting a password, a background task will start for the operat",
|
|
"product_code":"dcs",
|
|
"title":"Viewing Background Tasks",
|
|
"uri":"dcs-ug-0312028.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"69"
|
|
},
|
|
{
|
|
"desc":"You can view the data storage statistics of all nodes of a DCS Redis 3.0 Proxy Cluster instance. If data storage is unevenly distributed across nodes, you can scale up th",
|
|
"product_code":"dcs",
|
|
"title":"Viewing Data Storage Statistics of a DCS Redis 3.0 Proxy Cluster Instance",
|
|
"uri":"dcs-ug-0312029.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"70"
|
|
},
|
|
{
|
|
"desc":"This section describes how to query the shards and replicas of a DCS Redis 4.0 or 5.0 instance and how to manually promote a replica to master.Currently, this function is",
|
|
"product_code":"dcs",
|
|
"title":"Managing Shards and Replicas",
|
|
"uri":"dcs-ug-210107001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"71"
|
|
},
|
|
{
|
|
"desc":"By performing big key analysis and hot key analysis, you will have a picture of keys that occupy a large space and keys that are the most frequently accessed.Notes on big",
|
|
"product_code":"dcs",
|
|
"title":"Cache Analysis",
|
|
"uri":"dcs-ug-190808001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"72"
|
|
},
|
|
{
|
|
"desc":"DCS helps you control access to your DCS instances in the following ways, depending on the deployment mode:To control access to Redis 3.0 instances, you can use security ",
|
|
"product_code":"dcs",
|
|
"title":"Managing IP Address Whitelist",
|
|
"uri":"dcs-ug-190812001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"73"
|
|
},
|
|
{
|
|
"desc":"Redis logs queries that exceed a specified execution time. You can view the slow query log on the DCS console to identify performance issues.For details about the command",
|
|
"product_code":"dcs",
|
|
"title":"Viewing Redis Slow Logs",
|
|
"uri":"dcs-ug-190926001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"74"
|
|
},
|
|
{
|
|
"desc":"You can create run log files on the DCS console to collect run logs of DCS Redis instances within a specified period. After the logs are collected, you can download the l",
|
|
"product_code":"dcs",
|
|
"title":"Viewing Redis Run Logs",
|
|
"uri":"dcs-ug-1009001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"64",
|
|
"code":"75"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Backing Up and Restoring DCS Instances",
|
|
"uri":"dcs-ug-0312030.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"54",
|
|
"code":"76"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can back up and restore DCS instances.There is a small chance that inconsistent data could exist in a DCS instance owing to service system excepti",
|
|
"product_code":"dcs",
|
|
"title":"Overview",
|
|
"uri":"en-us_topic_0079835992.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"76",
|
|
"code":"77"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can configure an automatic backup policy. The system then backs up data in your instances according to the backup policy.If automatic backup is no",
|
|
"product_code":"dcs",
|
|
"title":"Configuring a Backup Policy",
|
|
"uri":"dcs-ug-0312031.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"76",
|
|
"code":"78"
|
|
},
|
|
{
|
|
"desc":"You need to manually back up data in DCS instances in a timely manner. This section describes how to manually back up data in master/standby instances using the DCS conso",
|
|
"product_code":"dcs",
|
|
"title":"Manually Backing Up a DCS Instance",
|
|
"uri":"dcs-ug-0312032.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"76",
|
|
"code":"79"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can restore backup data to a chosen DCS instance.At least one master/standby or cluster DCS instance is in the Running state.A backup task has bee",
|
|
"product_code":"dcs",
|
|
"title":"Restoring a DCS Instance",
|
|
"uri":"dcs-ug-0312033.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"76",
|
|
"code":"80"
|
|
},
|
|
{
|
|
"desc":"Due to the limitations of automatic and manual backups (automatically backed up data can be retained for a maximum of 7 days, and manually backed up data takes space in O",
|
|
"product_code":"dcs",
|
|
"title":"Downloading a Backup File",
|
|
"uri":"dcs-ug-0312034.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"76",
|
|
"code":"81"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Migrating Data with DCS",
|
|
"uri":"dcs-ug-0312035.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"54",
|
|
"code":"82"
|
|
},
|
|
{
|
|
"desc":"DCS for Redis provides the following migration modes:Backup file import: The data source can be an OBS bucket or a Redis instance.Importing data from an OBS bucket: Downl",
|
|
"product_code":"dcs",
|
|
"title":"Introduction to Migration with DCS",
|
|
"uri":"dcs-ug-0312036.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"82",
|
|
"code":"83"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Importing Backup Files",
|
|
"uri":"dcs-ug-210922001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"82",
|
|
"code":"84"
|
|
},
|
|
{
|
|
"desc":"Use the DCS console to migrate Redis data from Redis of other vendors or self-hosted Redis to DCS for Redis.Simply download the source Redis data and then upload the data",
|
|
"product_code":"dcs",
|
|
"title":"Importing Backup Files from an OBS Bucket",
|
|
"uri":"dcs-ug-0312037.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"84",
|
|
"code":"85"
|
|
},
|
|
{
|
|
"desc":"Use the DCS console to migrate Redis data from self-hosted Redis to DCS for Redis.Simply back up your Redis data, create a migration task on the DCS console, and then imp",
|
|
"product_code":"dcs",
|
|
"title":"Importing Backup Files from Redis",
|
|
"uri":"dcs-ug-210226001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"84",
|
|
"code":"86"
|
|
},
|
|
{
|
|
"desc":"If the source and target instances are interconnected and the SYNC and PSYNC commands are supported in the source instance, data can be migrated online in full or increme",
|
|
"product_code":"dcs",
|
|
"title":"Migrating Data Online",
|
|
"uri":"dcs-ug-0312038.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"82",
|
|
"code":"87"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Managing Passwords",
|
|
"uri":"dcs-ug-0312039.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"54",
|
|
"code":"88"
|
|
},
|
|
{
|
|
"desc":"Passwords can be configured to control access to your DCS instances, ensuring the security of your data.After 5 consecutive incorrect password attempts, the account for a",
|
|
"product_code":"dcs",
|
|
"title":"DCS Instance Passwords",
|
|
"uri":"cache-instance-password.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"88",
|
|
"code":"89"
|
|
},
|
|
{
|
|
"desc":"On the DCS console, you can change the password required for accessing your DCS instance.You cannot change the password of a DCS instance in password-free mode.The DCS in",
|
|
"product_code":"dcs",
|
|
"title":"Changing Instance Passwords",
|
|
"uri":"dcs-ug-0312040.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"88",
|
|
"code":"90"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Monitoring",
|
|
"uri":"dcs-ug-0326016.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"",
|
|
"code":"91"
|
|
},
|
|
{
|
|
"desc":"This section describes DCS metrics reported to Cloud Eye as well as their namespaces and dimensions. You can use the Cloud Eye console or call APIs to query the DCS metri",
|
|
"product_code":"dcs",
|
|
"title":"DCS Metrics",
|
|
"uri":"dcs-ug-0326019.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"91",
|
|
"code":"92"
|
|
},
|
|
{
|
|
"desc":"You can view DCS instance metrics on the Performance Monitoring page.You can also click View Metric in the Operation column on the Cache Manager page. You will be redirec",
|
|
"product_code":"dcs",
|
|
"title":"Viewing DCS Monitoring Metrics",
|
|
"uri":"dcs-ug-0312045.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"91",
|
|
"code":"93"
|
|
},
|
|
{
|
|
"desc":"This section describes the alarm rules of some metrics and how to configure the rules. In actual scenarios, configure alarm rules for metrics by referring to the followin",
|
|
"product_code":"dcs",
|
|
"title":"Configuring Alarm Rules for Critical Metrics",
|
|
"uri":"dcs-ug-190905001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"91",
|
|
"code":"94"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Auditing",
|
|
"uri":"dcs-ug-0326017.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"",
|
|
"code":"95"
|
|
},
|
|
{
|
|
"desc":"With CTS, you can query, audit, and review operations performed on cloud resources. Traces include the operation requests sent using the management console or open APIs a",
|
|
"product_code":"dcs",
|
|
"title":"Operations That Can Be Recorded by CTS",
|
|
"uri":"dcs-ug-0326018.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"95",
|
|
"code":"96"
|
|
},
|
|
{
|
|
"desc":"After CTS is enabled, the tracker starts recording operations on cloud resources. Operation records for the last seven days can be viewed on the CTS console. This section",
|
|
"product_code":"dcs",
|
|
"title":"Viewing Traces on the CTS Console",
|
|
"uri":"dcs-ug-0312047.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"95",
|
|
"code":"97"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"FAQs",
|
|
"uri":"dcs-faq-0326019.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"",
|
|
"code":"98"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Client and Network Connection",
|
|
"uri":"dcs-faq-0326020.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"98",
|
|
"code":"99"
|
|
},
|
|
{
|
|
"desc":"DCS Redis 3.0/4.0/5.0 instances are deployed in different modes. Therefore, the access control method varies.To control access to DCS Redis 3.0 instances, you can use sec",
|
|
"product_code":"dcs",
|
|
"title":"Security Group Configurations",
|
|
"uri":"en-us_topic_0090662012.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"100"
|
|
},
|
|
{
|
|
"desc":"No. DCS instances cannot be access at their EIPs over public networks. To ensure security, the ECS that serves as a client and the DCS instance that the client will acces",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS Support Public Access?",
|
|
"uri":"dcs-faq-0730001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"101"
|
|
},
|
|
{
|
|
"desc":"Cross-VPC means the client and the instance are not in the same VPC.Generally, VPCs are isolated from each other and ECSs cannot access DCS instances that belong to a dif",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS Support Cross-VPC Access?",
|
|
"uri":"en-us_topic_0100698850.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"102"
|
|
},
|
|
{
|
|
"desc":"Analysis: If persistent connections (\"pconnect\" in Redis terminology) or connection pooling is used and connections are closed after being used for connecting to DCS inst",
|
|
"product_code":"dcs",
|
|
"title":"What Should I Do If Access to DCS Fails After Server Disconnects?",
|
|
"uri":"dcs-faq-0730004.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"103"
|
|
},
|
|
{
|
|
"desc":"Occasional timeout errors are normal because of network connectivity and client timeout configurations.You are advised to include reconnection operations into your servic",
|
|
"product_code":"dcs",
|
|
"title":"Why Do Requests Sometimes Time Out in Clients?",
|
|
"uri":"dcs-faq-0730005.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"104"
|
|
},
|
|
{
|
|
"desc":"The error message that will possibly be displayed when you use the Jedis connection pool is as follows:If this error message is displayed, check whether your instance is ",
|
|
"product_code":"dcs",
|
|
"title":"What Should I Do If an Error Is Returned When I Use the Jedis Connection Pool?",
|
|
"uri":"dcs-faq-0730006.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"105"
|
|
},
|
|
{
|
|
"desc":"The possible causes are as follows:The command is spelled incorrectly.As shown in the following figure, the error message is returned because the correct command for dele",
|
|
"product_code":"dcs",
|
|
"title":"Why Is \"ERR unknown command\" Displayed When I Access a DCS Redis Instance Through a Redis Client?",
|
|
"uri":"dcs-faq-0730007.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"106"
|
|
},
|
|
{
|
|
"desc":"You can access a DCS Redis instance through the Redis Desktop Manager within a VPC.Enter the address, port number (6379), and authentication password of the DCS instance ",
|
|
"product_code":"dcs",
|
|
"title":"How Do I Access a DCS Redis Instance Through Redis Desktop Manager?",
|
|
"uri":"dcs-faq-0730008.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"107"
|
|
},
|
|
{
|
|
"desc":"By using DCS Redis instances, Spring Session can implement session sharing. When interconnecting with Spring Cloud, the following error information is displayed:For secur",
|
|
"product_code":"dcs",
|
|
"title":"What If \"ERR Unsupported CONFIG subcommand\" is Displayed in SpringCloud?",
|
|
"uri":"dcs-faq-0730009.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"108"
|
|
},
|
|
{
|
|
"desc":"Preliminary checks:Check the connection address.Obtain the connection address from the instance basic information page on the DCS console.Obtain the connection address fr",
|
|
"product_code":"dcs",
|
|
"title":"How Do I Troubleshoot Redis Connection Failures?",
|
|
"uri":"dcs-faq-0730010.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"109"
|
|
},
|
|
{
|
|
"desc":"Pay attention to the following issues when using Redis for pub/sub:Your client must process messages in a timely manner.Your client subscribes to a channel. If it does no",
|
|
"product_code":"dcs",
|
|
"title":"What Should Be Noted When Using Redis for Pub/Sub?",
|
|
"uri":"dcs-faq-0730011.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"99",
|
|
"code":"110"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Redis Usage",
|
|
"uri":"dcs-faq-0326021.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"98",
|
|
"code":"111"
|
|
},
|
|
{
|
|
"desc":"Possible cause 1:The service QPS is so high that the CPU usage spikes to 100%.The service QPS is so high that the CPU usage spikes to 100%.Possible cause 2:You have run c",
|
|
"product_code":"dcs",
|
|
"title":"Why Is CPU Usage of a DCS Redis Instance 100%?",
|
|
"uri":"dcs-faq-0730012.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"112"
|
|
},
|
|
{
|
|
"desc":"No. Once an instance is created, its VPC and subnet cannot be changed. If you want to use a different set of VPC and subnet, create a same instance and specify a desired ",
|
|
"product_code":"dcs",
|
|
"title":"Can I Change the VPC and Subnet for a DCS Redis Instance?",
|
|
"uri":"dcs-faq-0730013.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"113"
|
|
},
|
|
{
|
|
"desc":"Currently, DCS Redis 4.0 and Redis 5.0 instances use VPC endpoints and do not support security groups. You can configure whitelists instead. For details, see Managing IP ",
|
|
"product_code":"dcs",
|
|
"title":"Why Aren't Security Groups Configured for DCS Redis 4.0 and 5.0 Instances?",
|
|
"uri":"dcs-faq-0730014.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"114"
|
|
},
|
|
{
|
|
"desc":"The maximum allowed size of a key is 512 MB.To reduce memory usage and facilitate key query, ensure that each key does not exceed 1 KB.To reduce memory usage and facilita",
|
|
"product_code":"dcs",
|
|
"title":"Do DCS Redis Instances Limit the Size of a Key or Value?",
|
|
"uri":"dcs-faq-0730015.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"115"
|
|
},
|
|
{
|
|
"desc":"Cluster DCS Redis 3.0 instances (Proxy Cluster type) are used in the same way that you use single-node or master/standby instances. You do not need to know the backend no",
|
|
"product_code":"dcs",
|
|
"title":"Can I Obtain the Addresses of the Nodes in a Cluster DCS Redis Instance?",
|
|
"uri":"dcs-faq-0730017.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"116"
|
|
},
|
|
{
|
|
"desc":"DCS Redis 3.0 instances are deployed on VMs and some memory is reserved for system overheads.",
|
|
"product_code":"dcs",
|
|
"title":"Why Is Available Memory of a DCS Redis 3.0 Instance Smaller Than Instance Cache Size?",
|
|
"uri":"dcs-faq-0730018.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"117"
|
|
},
|
|
{
|
|
"desc":"Both single-node and master/standby DCS Redis instances support multiple databases. By default, single-node and master/standby DCS instances can read and write data in 25",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS for Redis Support Multiple Databases?",
|
|
"uri":"dcs-faq-0730019.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"118"
|
|
},
|
|
{
|
|
"desc":"Yes. DCS for Redis 4.0 and 5.0 support Redis Clusters. DCS for Redis 3.0 supports Proxy Clusters.",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS for Redis Support Redis Clusters?",
|
|
"uri":"dcs-faq-0730020.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"119"
|
|
},
|
|
{
|
|
"desc":"Yes. Redis Sentinel is supported by DCS for Redis 4.0 and 5.0 and is enabled by default. Sentinel constantly checks if master and replica nodes are running properly. If t",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS for Redis Support Sentinel?",
|
|
"uri":"dcs-faq-0730021.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"120"
|
|
},
|
|
{
|
|
"desc":"Data is evicted from cache based on a user-defined space limit in order to make space for new data. In the current versions of DCS, you can select an eviction policy.noev",
|
|
"product_code":"dcs",
|
|
"title":"What Is the Default Data Eviction Policy?",
|
|
"uri":"dcs-faq-0730022.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"121"
|
|
},
|
|
{
|
|
"desc":"Start the Redis exporter using the CLI. Based on the output, check for errors and troubleshoot accordingly.",
|
|
"product_code":"dcs",
|
|
"title":"What Should I Do If an Error Occurs in Redis Exporter?",
|
|
"uri":"dcs-faq-0730023.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"122"
|
|
},
|
|
{
|
|
"desc":"This is normal due to Redis functions (such as master/replica replication and lazyfree). When the memory becomes full, scale up the instance or remove unnecessary data.",
|
|
"product_code":"dcs",
|
|
"title":"Why Is Memory Usage More Than 100%?",
|
|
"uri":"dcs-faq-0730024.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"123"
|
|
},
|
|
{
|
|
"desc":"Redisson implements lock acquisition and unlocking in the following process:Redisson lock acquisition and unlocking are implemented by running Lua scripts.During lock acq",
|
|
"product_code":"dcs",
|
|
"title":"Why Is Redisson Distributed Lock Not Supported by DCS Proxy Cluster Redis 3.0 Instances?",
|
|
"uri":"dcs-faq-0730025.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"124"
|
|
},
|
|
{
|
|
"desc":"You cannot customize or change the port for accessing a DCS Redis 3.0 instance. You can customize and change the port for accessing a DCS Redis 4.0 or 5.0 instance.Redis ",
|
|
"product_code":"dcs",
|
|
"title":"Can I Customize or Change the Port for Accessing a DCS Instance?",
|
|
"uri":"dcs-faq-0730026.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"125"
|
|
},
|
|
{
|
|
"desc":"After a DCS instance is created, its intra-VPC connection addresses cannot be modified.For details about accessing DCS instances through clients, see Accessing a DCS Redi",
|
|
"product_code":"dcs",
|
|
"title":"Can I Modify the Connection Addresses for Accessing a DCS Instance?",
|
|
"uri":"dcs-faq-0730027.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"126"
|
|
},
|
|
{
|
|
"desc":"Master/Standby and cluster DCS Redis instances can be deployed across availability zones (AZs).If instances nodes in an AZ are faulty, nodes in other AZs will not be affe",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS Support Cross-AZ Deployment?",
|
|
"uri":"dcs-faq-0730029.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"127"
|
|
},
|
|
{
|
|
"desc":"Possible cause: When a cluster instance is started, status and data are synchronized between the nodes of the instance. If a large amount of data is continuously written ",
|
|
"product_code":"dcs",
|
|
"title":"Why Does It Take a Long Time to Start a Cluster DCS Instance?",
|
|
"uri":"dcs-faq-0730030.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"128"
|
|
},
|
|
{
|
|
"desc":"No. If you wish to query Redis configurations and usage information, use redis-cli. If you wish to monitor DCS Redis instance metrics, go to the Cloud Eye console. For de",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS for Redis Provide Backend Management Software?",
|
|
"uri":"dcs-faq-0730032.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"129"
|
|
},
|
|
{
|
|
"desc":"Possible cause: The output buffer may have occupied an excessive amount of memory.Solution: After connecting to the instance using redis-cli, run the redis-cli --bigkeys ",
|
|
"product_code":"dcs",
|
|
"title":"Why Is Memory of a DCS Redis Instance Used Up by Just a Few Keys?",
|
|
"uri":"dcs-faq-0730033.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"130"
|
|
},
|
|
{
|
|
"desc":"If a DCS instance is automatically deleted or manually deleted through the Redis client, its data cannot be retrieved. If you have backed up the instance, you can restore",
|
|
"product_code":"dcs",
|
|
"title":"Can I Recover Data from Deleted DCS Instances?",
|
|
"uri":"dcs-faq-0730034.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"131"
|
|
},
|
|
{
|
|
"desc":"Symptom: \"Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: OOM command not allowed when used memory > 'maxmemory'\" is returned duri",
|
|
"product_code":"dcs",
|
|
"title":"Why Is \"Error in execution\" Returned When I Access Redis?",
|
|
"uri":"dcs-faq-210223001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"111",
|
|
"code":"132"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Redis Commands",
|
|
"uri":"dcs-faq-190921003.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"98",
|
|
"code":"133"
|
|
},
|
|
{
|
|
"desc":"Exercise caution when clearing data.Redis 3.0Data of a DCS Redis 3.0 instance cannot be cleared on the console, and can only be cleared by the FLUSHDB or FLUSHALL command",
|
|
"product_code":"dcs",
|
|
"title":"How Do I Clear Redis Data?",
|
|
"uri":"dcs-faq-0730036.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"133",
|
|
"code":"134"
|
|
},
|
|
{
|
|
"desc":"Yes. For more information about Redis command compatibility, see Command Compatibility.",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS for Redis Support the INCR and EXPIRE Commands?",
|
|
"uri":"dcs-faq-0730039.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"133",
|
|
"code":"135"
|
|
},
|
|
{
|
|
"desc":"Possible causes include the following:The command is incorrect.The command is disabled in DCS.For security purposes, some Redis commands are disabled in DCS. For details ",
|
|
"product_code":"dcs",
|
|
"title":"Why Do I Fail to Execute Some Redis Commands?",
|
|
"uri":"dcs-faq-0730040.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"133",
|
|
"code":"136"
|
|
},
|
|
{
|
|
"desc":"Run the command in redis-cli to check whether the command takes effect.The following describes two scenarios:Scenario 1: Set and query the value of a key to check whether",
|
|
"product_code":"dcs",
|
|
"title":"Why Does a Redis Command Fail to Take Effect?",
|
|
"uri":"dcs-faq-0730041.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"133",
|
|
"code":"137"
|
|
},
|
|
{
|
|
"desc":"The time limit for executing a Redis command is 1 minute. This limit cannot be configured. After the execution of a command times out, your client will be automatically d",
|
|
"product_code":"dcs",
|
|
"title":"Is There a Time Limit on Executing Redis Commands? What Will Happen If a Command Times Out?",
|
|
"uri":"dcs-faq-0730042.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"133",
|
|
"code":"138"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Instance Scaling and Upgrade",
|
|
"uri":"dcs-faq-0326022.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"98",
|
|
"code":"139"
|
|
},
|
|
{
|
|
"desc":"No. Different Redis versions use different underlying architectures. The Redis version used by a DCS instance cannot be changed once the instance is created. However, you",
|
|
"product_code":"dcs",
|
|
"title":"Can DCS Redis Instances Be Upgraded, for Example, from Redis 3.0 to Redis 4.0 or 5.0?",
|
|
"uri":"dcs-faq-0730043.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"139",
|
|
"code":"140"
|
|
},
|
|
{
|
|
"desc":"O&M personnel will contact you before performing maintenance during the maintenance time window, informing you of the operations and their impacts. You do not need to wor",
|
|
"product_code":"dcs",
|
|
"title":"Are Services Interrupted If Maintenance is Performed During the Maintenance Time Window?",
|
|
"uri":"dcs-faq-0730044.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"139",
|
|
"code":"141"
|
|
},
|
|
{
|
|
"desc":"No. Specification modifications can take place while the instance is running and do not affect any other resources.",
|
|
"product_code":"dcs",
|
|
"title":"Are Instance Resources Affected During Specification Modification?",
|
|
"uri":"dcs-faq-0730045.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"139",
|
|
"code":"142"
|
|
},
|
|
{
|
|
"desc":"You are advised to change the instance specifications during off-peak hours because specification modification has the following impacts:Impact of instance type changes:F",
|
|
"product_code":"dcs",
|
|
"title":"Are Services Interrupted During Specification Modification?",
|
|
"uri":"dcs-faq-0730047.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"139",
|
|
"code":"143"
|
|
},
|
|
{
|
|
"desc":"Specifications of a DCS instance cannot be modified if another task of the instance is still running. For example, you cannot delete or scale up an instance while it is b",
|
|
"product_code":"dcs",
|
|
"title":"Why Can't I Modify Specifications for a DCS Redis Instance?",
|
|
"uri":"dcs-faq-0730048.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"139",
|
|
"code":"144"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Monitoring and Alarm",
|
|
"uri":"dcs-faq-0326023.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"98",
|
|
"code":"145"
|
|
},
|
|
{
|
|
"desc":"No. To ensure high-performance reads and writes, Redis does not audit commands. Commands are not printed.",
|
|
"product_code":"dcs",
|
|
"title":"Does Redis Support Command Audits?",
|
|
"uri":"dcs-faq-0730049.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"145",
|
|
"code":"146"
|
|
},
|
|
{
|
|
"desc":"If you have any doubt on the monitoring data of a DCS Redis instance, you can access the instance through redis-cli and run the INFO ALL command to view the metrics. For ",
|
|
"product_code":"dcs",
|
|
"title":"What Should I Do If the Monitoring Data of a DCS Redis Instance Is Abnormal?",
|
|
"uri":"dcs-faq-0730050.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"145",
|
|
"code":"147"
|
|
},
|
|
{
|
|
"desc":"For single-node and master/standby DCS instances, the used instance memory is measured by the Redis-server process. For cluster DCS instances, the used cluster memory is ",
|
|
"product_code":"dcs",
|
|
"title":"Why Is Used Memory Greater Than Available Memory?",
|
|
"uri":"dcs-faq-0730052.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"145",
|
|
"code":"148"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Data Backup, Export, and Migration",
|
|
"uri":"dcs-faq-0326024.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"98",
|
|
"code":"149"
|
|
},
|
|
{
|
|
"desc":"For master/standby or cluster instances:Perform the following operations to export the data:On the Backups & Restorations page, view the backup records.If there are no ba",
|
|
"product_code":"dcs",
|
|
"title":"How Do I Export DCS Redis Instance Data?",
|
|
"uri":"dcs-faq-0730053.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"149",
|
|
"code":"150"
|
|
},
|
|
{
|
|
"desc":"Redis 3.0No. On the console, backup data of a DCS Redis 3.0 instance can be exported only to AOF files. To export data to RDB files, run the following command in redis-cl",
|
|
"product_code":"dcs",
|
|
"title":"Can I Export Backup Data of DCS Redis Instances to RDB Files Using the Console?",
|
|
"uri":"dcs-faq-0730054.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"149",
|
|
"code":"151"
|
|
},
|
|
{
|
|
"desc":"DCS Redis instances:Single-node: Not supportedMaster/Standby and cluster: SupportedSingle-node: Not supportedMaster/Standby and cluster: Supported",
|
|
"product_code":"dcs",
|
|
"title":"Does DCS Support Data Persistence?",
|
|
"uri":"dcs-faq-0730057.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"149",
|
|
"code":"152"
|
|
},
|
|
{
|
|
"desc":"Rump is an open-source tool designed for migrating Redis data online. It supports migration between DBs of the same instance and between DBs of different instances.Rump u",
|
|
"product_code":"dcs",
|
|
"title":"Online Migration with Rump",
|
|
"uri":"dcs-migration-090626001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"149",
|
|
"code":"153"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Master/Standby Switchover",
|
|
"uri":"dcs-faq-191204001.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"98",
|
|
"code":"154"
|
|
},
|
|
{
|
|
"desc":"A master/standby switchover may occur in the following scenarios:A master/standby switchover operation is initiated on the DCS Console.If the master node of a master/stan",
|
|
"product_code":"dcs",
|
|
"title":"When Does a Master/Standby Switchover Occur?",
|
|
"uri":"dcs-faq-0730058.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"154",
|
|
"code":"155"
|
|
},
|
|
{
|
|
"desc":"If a fault occurs in a master/standby or cluster DCS instance, a failover is triggered automatically. Services may be interrupted for less than half a minute during excep",
|
|
"product_code":"dcs",
|
|
"title":"How Does Master/Standby Switchover Affect Services?",
|
|
"uri":"dcs-faq-0730059.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"154",
|
|
"code":"156"
|
|
},
|
|
{
|
|
"desc":"No. If the master fails, the standby node will be promoted to master and takes the original IP address.",
|
|
"product_code":"dcs",
|
|
"title":"Does the Client Need to Switch the Connection Address After a Master/Standby Switchover?",
|
|
"uri":"dcs-faq-0730060.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"154",
|
|
"code":"157"
|
|
},
|
|
{
|
|
"desc":"Redis master/standby instances are also called master/slave instances. Generally, updates to the master cache node are automatically and asynchronously replicated to the ",
|
|
"product_code":"dcs",
|
|
"title":"How Does Redis Master/Standby Replication Work?",
|
|
"uri":"dcs-faq-0730061.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"154",
|
|
"code":"158"
|
|
},
|
|
{
|
|
"desc":"For details about the terms involved in this document, see Glossary.",
|
|
"product_code":"dcs",
|
|
"title":"Glossary",
|
|
"uri":"en-us_topic_0072429345.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"",
|
|
"code":"159"
|
|
},
|
|
{
|
|
"desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.",
|
|
"product_code":"dcs",
|
|
"title":"Change History",
|
|
"uri":"dcs-ug-0326026.html",
|
|
"doc_type":"usermanual",
|
|
"p_code":"",
|
|
"code":"160"
|
|
}
|
|
] |