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DCS UMN 20250314 version

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Reviewed-by: Liudmila Denisova <ldenisov@noreply.gitea.eco.tsi-dev.otc-service.com>
Co-authored-by: chenjunjie <chenjunjie@huawei.com>
Co-committed-by: chenjunjie <chenjunjie@huawei.com>
This commit is contained in:
Chen, Junjie
2025-03-25 10:52:26 +00:00
committed by zuul
parent 2d6f6839ae
commit 70ca474258
14 changed files with 3040 additions and 301 deletions
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<ul id="CacheCluster__ul1265853801012"><li id="CacheCluster__li365893819101">The client is decoupled from the cloud service.</li><li id="CacheCluster__li565815388101">They support millions of concurrent requests, equivalent to Redis Cluster instances.</li><li id="CacheCluster__li465893811014">A wide range of memory specifications adapt to different scenarios.</li></ul> <ul id="CacheCluster__ul1265853801012"><li id="CacheCluster__li365893819101">The client is decoupled from the cloud service.</li><li id="CacheCluster__li565815388101">They support millions of concurrent requests, equivalent to Redis Cluster instances.</li><li id="CacheCluster__li465893811014">A wide range of memory specifications adapt to different scenarios.</li></ul>
<div class="note" id="CacheCluster__note134811721192210"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="CacheCluster__ul1758133822318"><li id="CacheCluster__li758133852319">A Proxy Cluster instance can be connected in the same way that a single-node or master/standby instance is connected, without any special settings on the client. You can use the IP address of the instance, and do not need to know or use the proxy or shard addresses.</li></ul> <div class="note" id="CacheCluster__note134811721192210"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="CacheCluster__ul1758133822318"><li id="CacheCluster__li758133852319">A Proxy Cluster instance can be connected in the same way that a single-node or master/standby instance is connected, without any special settings on the client. You can use the IP address of the instance, and do not need to know or use the proxy or shard addresses.</li></ul>
</div></div> </div></div>
<div class="section" id="CacheCluster__section946143384218"><h4 class="sectiontitle">Proxy Cluster DCS Redis 4.0/5.0 Instances</h4><p id="CacheCluster__p15151319104314">Proxy Cluster DCS Redis 4.0/5.0 instances are built based on open-source Redis 4.0/5.0 and compatible with <a href="https://github.com/CodisLabs/codis" target="_blank" rel="noopener noreferrer">open source codis</a>. They provide multiple large-capacity specifications ranging from 4 GB to 1024 GB and .</p> <div class="section" id="CacheCluster__section946143384218"><h4 class="sectiontitle">Proxy Cluster DCS Redis 4.0/5.0/6.0 Instances</h4><p id="CacheCluster__p15151319104314">Proxy Cluster DCS Redis 4.0/5.0/6.0 instances are built based on open-source Redis 4.0/5.0/6.0 and compatible with <a href="https://github.com/CodisLabs/codis" target="_blank" rel="noopener noreferrer">open source codis</a>. They provide multiple large-capacity specifications ranging from 4 GB to 1024 GB and .</p>
<p id="CacheCluster__p6921194025014"><a href="#CacheCluster__table3552324111">Table 1</a> lists the number of shards corresponding to different specifications. You can customize the shard size when creating an instance. Currently, the number of shards and replicas cannot be customized. By default, each shard has two replicas.</p> <p id="CacheCluster__p6921194025014"><a href="#CacheCluster__table3552324111">Table 1</a> lists the number of shards corresponding to different specifications. You can customize the shard size when creating an instance. Currently, the number of shards and replicas cannot be customized. By default, each shard has two replicas.</p>
<p id="CacheCluster__p17223016111"><strong id="CacheCluster__b973712331448">Memory per shard = Instance specification/Number of shards</strong>. For example, if a 48 GB instance has 6 shards, the size of each shard is 48 GB/6 = 8 GB.</p> <p id="CacheCluster__p17223016111"><strong id="CacheCluster__b973712331448">Memory per shard = Instance specification/Number of shards</strong>. For example, if a 48 GB instance has 6 shards, the size of each shard is 48 GB/6 = 8 GB.</p>
<div class="tablenoborder"><a name="CacheCluster__table3552324111"></a><a name="table3552324111"></a><table cellpadding="4" cellspacing="0" summary="" id="CacheCluster__table3552324111" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Specifications of Proxy Cluster DCS Redis 4.0/5.0 instances</caption><thead align="left"><tr id="CacheCluster__row65521623113"><th align="left" class="cellrowborder" valign="top" width="22.56%" id="mcps1.3.4.5.2.5.1.1"><p id="CacheCluster__p1955210211118">Total Memory</p> <div class="tablenoborder"><a name="CacheCluster__table3552324111"></a><a name="table3552324111"></a><table cellpadding="4" cellspacing="0" summary="" id="CacheCluster__table3552324111" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Specifications of Proxy Cluster DCS Redis 4.0/5.0/6.0 instances</caption><thead align="left"><tr id="CacheCluster__row65521623113"><th align="left" class="cellrowborder" valign="top" width="22.56%" id="mcps1.3.4.5.2.5.1.1"><p id="CacheCluster__p1955210211118">Total Memory</p>
</th> </th>
<th align="left" class="cellrowborder" valign="top" width="15.120000000000001%" id="mcps1.3.4.5.2.5.1.2"><p id="CacheCluster__p4666439770">Proxies</p> <th align="left" class="cellrowborder" valign="top" width="15.120000000000001%" id="mcps1.3.4.5.2.5.1.2"><p id="CacheCluster__p4666439770">Proxies</p>
</th> </th>
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</tbody> </tbody>
</table> </table>
</div> </div>
<div class="fignone" id="CacheCluster__fig333235812453"><span class="figcap"><b>Figure 1 </b>Architecture of a Proxy Cluster DCS Redis 4.0/5.0 instance</span><br><span><img id="CacheCluster__image233335814457" src="en-us_image_0000001433519397.png"></span></div> <div class="fignone" id="CacheCluster__fig333235812453"><span class="figcap"><b>Figure 1 </b>Architecture of a Proxy Cluster DCS Redis 4.0/5.0/6.0 instance</span><br><span><img id="CacheCluster__image233335814457" src="en-us_image_0000001433519397.png"></span></div>
<p id="CacheCluster__p92455403117">Architecture description:</p> <p id="CacheCluster__p92455403117">Architecture description:</p>
<ul id="CacheCluster__ul1656634373315"><li id="CacheCluster__li1056634315335"><strong id="CacheCluster__b1856604314336">VPC</strong><p id="CacheCluster__p1956624353316">All server nodes of the cluster instance run in the same VPC.</p> <ul id="CacheCluster__ul1656634373315"><li id="CacheCluster__li1056634315335"><strong id="CacheCluster__b1856604314336">VPC</strong><p id="CacheCluster__p1956624353316">All server nodes of the cluster instance run in the same VPC.</p>
<div class="note" id="CacheCluster__note1056694315338"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="CacheCluster__p175668437337">The client and the cluster instance must be in the same VPC, and the instance whitelist must allow access from the client IP address.</p> <div class="note" id="CacheCluster__note1056694315338"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="CacheCluster__p175668437337">The client and the cluster instance must be in the same VPC, and the instance whitelist must allow access from the client IP address.</p>

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<a name="dcs-pd-0220606"></a><a name="dcs-pd-0220606"></a> <a name="dcs-pd-0220606"></a><a name="dcs-pd-0220606"></a>
<h1 class="topictitle1">Read/Write Splitting Redis</h1> <h1 class="topictitle1">Read/Write Splitting Redis</h1>
<div id="body0000001273521944"><p id="dcs-pd-0220606__p039922081919">This section describes read/write splitting DCS Redis 4.0/5.0 instances. Read/write splitting is implemented on the server side by default. Proxies distinguish between read requests and write requests, and forward write requests to the master node and read requests to the standby node.</p> <div id="body0000001273521944"><p id="dcs-pd-0220606__p039922081919">This section describes read/write splitting DCS Redis 4.0/5.0/6.0 instances. Read/write splitting is implemented on the server side by default. Proxies distinguish between read requests and write requests, and forward write requests to the master node and read requests to the standby node.</p>
<p id="dcs-pd-0220606__p13604343192211">Read/write splitting is suitable for scenarios with high read concurrency and few write requests, aiming to improve the performance of high concurrency and reducing O&amp;M costs.</p> <p id="dcs-pd-0220606__p13604343192211">Read/write splitting is suitable for scenarios with high read concurrency and few write requests, aiming to improve the performance of high concurrency and reducing O&amp;M costs.</p>
<div class="p" id="dcs-pd-0220606__p206581978304">When using read/write splitting instances, note the following:<ol id="dcs-pd-0220606__en-us_topic_0299360038_ol66581373305"><li id="dcs-pd-0220606__en-us_topic_0299360038_li165827113015">Read requests are sent to replicas. There is a delay when data is synchronized from the master to the replicas.<p id="dcs-pd-0220606__en-us_topic_0299360038_p1265813710307"><a name="dcs-pd-0220606__en-us_topic_0299360038_li165827113015"></a><a name="en-us_topic_0299360038_li165827113015"></a>If your services are sensitive to the delay, do not use read/write splitting instances. Instead, use master/standby or cluster instances.</p> <div class="p" id="dcs-pd-0220606__p206581978304">When using read/write splitting instances, note the following:<ol id="dcs-pd-0220606__en-us_topic_0299360038_ol66581373305"><li id="dcs-pd-0220606__en-us_topic_0299360038_li165827113015">Read requests are sent to replicas. There is a delay when data is synchronized from the master to the replicas.<p id="dcs-pd-0220606__en-us_topic_0299360038_p1265813710307"><a name="dcs-pd-0220606__en-us_topic_0299360038_li165827113015"></a><a name="en-us_topic_0299360038_li165827113015"></a>If your services are sensitive to the delay, do not use read/write splitting instances. Instead, use master/standby or cluster instances.</p>
</li><li id="dcs-pd-0220606__en-us_topic_0299360038_li565811773014">Read/write splitting is suitable when there are more read requests than write requests. If there are a lot of write requests, the master and replicas may be disconnected, or the data synchronization between them may fail after the disconnection. As a result, the read performance deteriorates.<p id="dcs-pd-0220606__en-us_topic_0299360038_p1465819718303"><a name="dcs-pd-0220606__en-us_topic_0299360038_li565811773014"></a><a name="en-us_topic_0299360038_li565811773014"></a>If your services are write-heavy, use master/standby or cluster instances.</p> </li><li id="dcs-pd-0220606__en-us_topic_0299360038_li565811773014">Read/write splitting is suitable when there are more read requests than write requests. If there are a lot of write requests, the master and replicas may be disconnected, or the data synchronization between them may fail after the disconnection. As a result, the read performance deteriorates.<p id="dcs-pd-0220606__en-us_topic_0299360038_p1465819718303"><a name="dcs-pd-0220606__en-us_topic_0299360038_li565811773014"></a><a name="en-us_topic_0299360038_li565811773014"></a>If your services are write-heavy, use master/standby or cluster instances.</p>

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<h1 class="topictitle1">Redis 4.0 and 5.0 Instance Specifications</h1> <h1 class="topictitle1">Redis 4.0 and 5.0 Instance Specifications</h1>
<div id="body1600250978002"><p id="dcs-pd-0916002__p154261042172718">This section describes <span class="keyword" id="dcs-pd-0916002__keyword61951224299">DCS Redis 4.0 and 5.0 instance specifications</span>, including the total memory, available memory, maximum number of connections allowed, maximum/assured bandwidth, and reference performance.</p> <div id="body1600250978002"><p id="dcs-pd-0916002__p154261042172718">This section describes <span class="keyword" id="dcs-pd-0916002__keyword61951224299">DCS Redis 4.0 and 5.0 instance specifications</span>, including the total memory, available memory, maximum number of connections allowed, maximum/assured bandwidth, and reference performance.</p>
<p id="dcs-pd-0916002__p993813111219">The following metrics are related to the instance specifications:</p> <p id="dcs-pd-0916002__p993813111219">The following metrics are related to the instance specifications:</p>
<ul id="dcs-pd-0916002__ul174431454161112"><li id="dcs-pd-0916002__li5444115461114">Used memory: You can check the memory usage of an instance by viewing the <strong id="dcs-pd-0916002__b19299386447594">Memory Usage</strong> and <strong id="dcs-pd-0916002__b2681614187594">Used Memory</strong> metrics.</li><li id="dcs-pd-0916002__li4444155417117">Maximum connections: The maximum number of connections allowed is the maximum number of clients that can be connected to an instance. To check the number of connections to an instance, view the <strong id="dcs-pd-0916002__b11315278257594">Connected Clients</strong> metric. After an instance is created, you can change the maximum number of connections of the instance by modifying the <strong id="dcs-pd-0916002__b27141915503">maxclients</strong> parameter on the <strong id="dcs-pd-0916002__b371489155019">Instance Configuration</strong> &gt; <strong id="dcs-pd-0916002__b371469145011">Parameters</strong> page on the console.</li><li id="dcs-pd-0916002__li12444145419113">QPS represents queries per second, which is the number of commands processed per second.</li><li id="dcs-pd-0916002__li11666341415">Bandwidth: You can view the <strong id="dcs-pd-0916002__b13812174717594">Flow Control Times</strong> metric to check whether the bandwidth has exceeded the limit.<p id="dcs-pd-0916002__p040220814264">You can also check the <strong id="dcs-pd-0916002__b26955815525">Bandwidth Usage</strong> metric. This metric is for reference only, because it may be higher than 100%. For details, see <a href="dcs-faq-0513001.html">Why Does Bandwidth Usage Exceed 100%?</a></p> <ul id="dcs-pd-0916002__ul174431454161112"><li id="dcs-pd-0916002__li5444115461114">Used memory: You can check the memory usage of an instance by viewing the <strong id="dcs-pd-0916002__b19299386447594">Memory Usage</strong> and <strong id="dcs-pd-0916002__b2681614187594">Used Memory</strong> metrics.</li><li id="dcs-pd-0916002__li9951151693613">Maximum connections: The maximum number of connections allowed is the maximum number of clients that can be connected to an instance. This metric is implemented by the <span class="parmname" id="dcs-pd-0916002__parmname13814101514610"><b>maxclients</b></span> parameter (unavailable for read/write splitting instances). To modify this parameter, go to the <span class="menucascade" id="dcs-pd-0916002__menucascade15814115114617"><b><span class="uicontrol" id="dcs-pd-0916002__uicontrol4814215184615">Instance Configuration &gt; Parameters</span></b></span> page on the console. To check the number of connections to an instance, view the <strong id="dcs-pd-0916002__b632776115114525">Connected Clients</strong> metric.</li><li id="dcs-pd-0916002__li12444145419113">QPS represents queries per second, which is the number of commands processed per second.</li><li id="dcs-pd-0916002__li11666341415">Bandwidth: You can view the <strong id="dcs-pd-0916002__b13812174717594">Flow Control Times</strong> metric to check whether the bandwidth has exceeded the limit.<p id="dcs-pd-0916002__p040220814264">You can also check the <strong id="dcs-pd-0916002__b26955815525">Bandwidth Usage</strong> metric. This metric is for reference only, because it may be higher than 100%. For details, see <a href="dcs-faq-0513001.html">Why Does Bandwidth Usage Exceed 100%?</a></p>
</li></ul> </li></ul>
<div class="note" id="dcs-pd-0916002__nbd28d4bd47184ebbaad5bc928e17bd9a"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="dcs-pd-0916002__ul208441156174514"><li id="dcs-pd-0916002__li2844105604512">DCS Redis 4.0 and 5.0 instances are available in single-node, master/standby, read/write splitting, Proxy Cluster, and Redis Cluster types.</li><li id="dcs-pd-0916002__li15285954515">Only the x86 architecture is supported. The Arm architecture is not supported.</li></ul> <div class="note" id="dcs-pd-0916002__nbd28d4bd47184ebbaad5bc928e17bd9a"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="dcs-pd-0916002__ul208441156174514"><li id="dcs-pd-0916002__li2844105604512">DCS Redis 4.0 and 5.0 instances are available in single-node, master/standby, read/write splitting, Proxy Cluster, and Redis Cluster types.</li><li id="dcs-pd-0916002__li15285954515">Only the x86 architecture is supported. The Arm architecture is not supported.</li></ul>
</div></div> </div></div>
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<td class="cellrowborder" valign="top" width="23.54%" headers="mcps1.3.7.4.2.7.1.6 "><p id="dcs-pd-0916002__p1512073211220">redis.proxy.xu1.large.768</p> <td class="cellrowborder" valign="top" width="23.54%" headers="mcps1.3.7.4.2.7.1.6 "><p id="dcs-pd-0916002__p1512073211220">redis.proxy.xu1.large.768</p>
</td> </td>
</tr> </tr>
<tr id="dcs-pd-0916002__row14120132102219"><td class="cellrowborder" valign="top" width="10.440000000000001%" headers="mcps1.3.7.4.2.7.1.1 "><p id="dcs-pd-0916002__p15120143222214">1024</p> <tr id="dcs-pd-0916002__row14120132102219"><td class="cellrowborder" valign="top" width="10.440000000000001%" headers="mcps1.3.7.4.2.7.1.1 "><p id="dcs-pd-0916002__p15120143222214">1,024</p>
</td> </td>
<td class="cellrowborder" valign="top" width="11.97%" headers="mcps1.3.7.4.2.7.1.2 "><p id="dcs-pd-0916002__p112063212224">1024</p> <td class="cellrowborder" valign="top" width="11.97%" headers="mcps1.3.7.4.2.7.1.2 "><p id="dcs-pd-0916002__p112063212224">1,024</p>
</td> </td>
<td class="cellrowborder" valign="top" width="17.599999999999998%" headers="mcps1.3.7.4.2.7.1.3 "><p id="dcs-pd-0916002__p141203322227">500,000/500,000</p> <td class="cellrowborder" valign="top" width="17.599999999999998%" headers="mcps1.3.7.4.2.7.1.3 "><p id="dcs-pd-0916002__p141203322227">500,000/500,000</p>
</td> </td>
@ -850,9 +850,9 @@
<td class="cellrowborder" valign="top" width="17.75%" headers="mcps1.3.8.5.2.8.1.7 "><p id="dcs-pd-0916002__p173411542487">redis.cluster.xu1.large.r2.768</p> <td class="cellrowborder" valign="top" width="17.75%" headers="mcps1.3.8.5.2.8.1.7 "><p id="dcs-pd-0916002__p173411542487">redis.cluster.xu1.large.r2.768</p>
</td> </td>
</tr> </tr>
<tr id="dcs-pd-0916002__row29611193317"><td class="cellrowborder" valign="top" width="11.82%" headers="mcps1.3.8.5.2.8.1.1 "><p id="dcs-pd-0916002__p99619903113">1024</p> <tr id="dcs-pd-0916002__row29611193317"><td class="cellrowborder" valign="top" width="11.82%" headers="mcps1.3.8.5.2.8.1.1 "><p id="dcs-pd-0916002__p99619903113">1,024</p>
</td> </td>
<td class="cellrowborder" valign="top" width="11.3%" headers="mcps1.3.8.5.2.8.1.2 "><p id="dcs-pd-0916002__p16961129153111">1024</p> <td class="cellrowborder" valign="top" width="11.3%" headers="mcps1.3.8.5.2.8.1.2 "><p id="dcs-pd-0916002__p16961129153111">1,024</p>
</td> </td>
<td class="cellrowborder" valign="top" width="11.84%" headers="mcps1.3.8.5.2.8.1.3 "><p id="dcs-pd-0916002__p196112912314">128</p> <td class="cellrowborder" valign="top" width="11.84%" headers="mcps1.3.8.5.2.8.1.3 "><p id="dcs-pd-0916002__p196112912314">128</p>
</td> </td>

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<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p18350154610554">CLUSTER DELSLOTS</p> <td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p18350154610554">CLUSTER DELSLOTS</p>
</td> </td>
</tr> </tr>
<tr id="dcs-pd-190826001__row1635084635518"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p20350124615512">-</p> <tr id="dcs-pd-190826001__row1635084635518"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p115647281713">WAITAOF</p>
</td> </td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p635014464551">CONFIG REWRITE</p> <td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p635014464551">CONFIG REWRITE</p>
</td> </td>
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<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p11637102614373">-</p> <td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p11637102614373">-</p>
</td> </td>
</tr> </tr>
<tr id="dcs-pd-190826001__row102452458291"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p1647121403215">-</p>
</td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p14795124818137">COMMAND COUNT</p>
</td>
<td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.5.3.2.5.1.3 "><p id="dcs-pd-190826001__p176909151324">-</p>
</td>
<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p10520151663210">-</p>
</td>
</tr>
<tr id="dcs-pd-190826001__row195218477297"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p1347201414324">-</p>
</td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p1823082201717">COMMAND DOCS</p>
</td>
<td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.5.3.2.5.1.3 "><p id="dcs-pd-190826001__p7690151533213">-</p>
</td>
<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p45208164320">-</p>
</td>
</tr>
<tr id="dcs-pd-190826001__row137707499292"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p16471814183212">-</p>
</td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p92301222151716">COMMAND GETKEYS</p>
</td>
<td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.5.3.2.5.1.3 "><p id="dcs-pd-190826001__p8690141512327">-</p>
</td>
<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p252071633219">-</p>
</td>
</tr>
<tr id="dcs-pd-190826001__row87315252911"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p134761414323">-</p>
</td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p9230622111719">COMMAND GETKEYSANDFLAGS</p>
</td>
<td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.5.3.2.5.1.3 "><p id="dcs-pd-190826001__p169021543215">-</p>
</td>
<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p16521101633218">-</p>
</td>
</tr>
<tr id="dcs-pd-190826001__row83949663015"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p14761473210">-</p>
</td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p1323042211719">COMMAND INFO</p>
</td>
<td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.5.3.2.5.1.3 "><p id="dcs-pd-190826001__p1369061513325">-</p>
</td>
<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p1552131663218">-</p>
</td>
</tr>
<tr id="dcs-pd-190826001__row171611922183019"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p2470140326">-</p>
</td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p6230622201718">COMMAND LIST</p>
</td>
<td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.5.3.2.5.1.3 "><p id="dcs-pd-190826001__p269181510329">-</p>
</td>
<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p1152110163323">-</p>
</td>
</tr>
<tr id="dcs-pd-190826001__row5833537113016"><td class="cellrowborder" valign="top" width="17.21%" headers="mcps1.3.5.3.2.5.1.1 "><p id="dcs-pd-190826001__p1478149323">-</p>
</td>
<td class="cellrowborder" valign="top" width="27.310000000000002%" headers="mcps1.3.5.3.2.5.1.2 "><p id="dcs-pd-190826001__p161581242244">RESTORE-ASKING</p>
</td>
<td class="cellrowborder" valign="top" width="21.68%" headers="mcps1.3.5.3.2.5.1.3 "><p id="dcs-pd-190826001__p186912015203215">-</p>
</td>
<td class="cellrowborder" valign="top" width="33.800000000000004%" headers="mcps1.3.5.3.2.5.1.4 "><p id="dcs-pd-190826001__p115212016183219">-</p>
</td>
</tr>
</tbody> </tbody>
</table> </table>
</div> </div>
@ -725,7 +788,7 @@
</td> </td>
<td class="cellrowborder" valign="top" width="21.207879212078794%" headers="mcps1.3.5.4.2.5.1.2 "><p id="dcs-pd-190826001__p2085175442919">-</p> <td class="cellrowborder" valign="top" width="21.207879212078794%" headers="mcps1.3.5.4.2.5.1.2 "><p id="dcs-pd-190826001__p2085175442919">-</p>
</td> </td>
<td class="cellrowborder" valign="top" width="24.507549245075495%" headers="mcps1.3.5.4.2.5.1.3 "><p id="dcs-pd-190826001__p385115543298">-</p> <td class="cellrowborder" valign="top" width="24.507549245075495%" headers="mcps1.3.5.4.2.5.1.3 "><p id="dcs-pd-190826001__p188573003211">ZREM</p>
</td> </td>
<td class="cellrowborder" valign="top" width="31.376862313768626%" headers="mcps1.3.5.4.2.5.1.4 "><p id="dcs-pd-190826001__p781246144214">-</p> <td class="cellrowborder" valign="top" width="31.376862313768626%" headers="mcps1.3.5.4.2.5.1.4 "><p id="dcs-pd-190826001__p781246144214">-</p>
</td> </td>
@ -734,7 +797,7 @@
</td> </td>
<td class="cellrowborder" valign="top" width="21.207879212078794%" headers="mcps1.3.5.4.2.5.1.2 "><p id="dcs-pd-190826001__p1385125412912">-</p> <td class="cellrowborder" valign="top" width="21.207879212078794%" headers="mcps1.3.5.4.2.5.1.2 "><p id="dcs-pd-190826001__p1385125412912">-</p>
</td> </td>
<td class="cellrowborder" valign="top" width="24.507549245075495%" headers="mcps1.3.5.4.2.5.1.3 "><p id="dcs-pd-190826001__p128511854122916">-</p> <td class="cellrowborder" valign="top" width="24.507549245075495%" headers="mcps1.3.5.4.2.5.1.3 "><p id="dcs-pd-190826001__p118577011323">ZUNION</p>
</td> </td>
<td class="cellrowborder" valign="top" width="31.376862313768626%" headers="mcps1.3.5.4.2.5.1.4 "><p id="dcs-pd-190826001__p10812166124215">-</p> <td class="cellrowborder" valign="top" width="31.376862313768626%" headers="mcps1.3.5.4.2.5.1.4 "><p id="dcs-pd-190826001__p10812166124215">-</p>
</td> </td>

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</thead> </thead>
<tbody><tr id="dcs-pd-191224001__en-us_topic_0214950770_row174410147217"><td class="cellrowborder" valign="top" width="11.23%" headers="mcps1.3.2.2.5.1.1 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p104571462120">Redis version compatibility</p> <tbody><tr id="dcs-pd-191224001__en-us_topic_0214950770_row174410147217"><td class="cellrowborder" valign="top" width="11.23%" headers="mcps1.3.2.2.5.1.1 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p104571462120">Redis version compatibility</p>
</td> </td>
<td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.2.2.5.1.2 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p445131415219">Redis 3.0/4.0/5.0/6.0/7.0 You can select a version when creating an instance.</p> <td class="cellrowborder" valign="top" width="21.62%" headers="mcps1.3.2.2.5.1.2 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p445131415219">Single-node and master/standby: Redis 4.0/5.0/6.0/7.0. Read/Write splitting: Redis 4.0/5.0/6.0.</p>
</td> </td>
<td class="cellrowborder" valign="top" width="29.970000000000002%" headers="mcps1.3.2.2.5.1.3 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p11922193718">Redis 3.0/4.0/5.0 You can select a version when creating an instance.</p> <td class="cellrowborder" valign="top" width="29.970000000000002%" headers="mcps1.3.2.2.5.1.3 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p41931757771">Redis 4.0/5.0/6.0 You can select a version when creating an instance.</p>
</td> </td>
<td class="cellrowborder" valign="top" width="37.18%" headers="mcps1.3.2.2.5.1.4 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p164631303220">Redis 4.0/5.0/6.0/7.0 You can select a version when creating an instance.</p> <td class="cellrowborder" valign="top" width="37.18%" headers="mcps1.3.2.2.5.1.4 "><p id="dcs-pd-191224001__en-us_topic_0214950770_p164631303220">Redis 4.0/5.0/6.0/7.0 You can select a version when creating an instance.</p>
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<div class="section" id="dcs-ug-0312008__section46727122"><h4 class="sectiontitle">Prerequisites</h4><p id="dcs-ug-0312008__p63863782">The instance is in the <strong id="dcs-ug-0312008__b18821028134513">Running</strong> state.</p> <div class="section" id="dcs-ug-0312008__section46727122"><h4 class="sectiontitle">Prerequisites</h4><p id="dcs-ug-0312008__p63863782">The instance is in the <strong id="dcs-ug-0312008__b18821028134513">Running</strong> state.</p>
</div> </div>
<div class="section" id="dcs-ug-0312008__section321623193712"><h4 class="sectiontitle">Procedure</h4><ol id="dcs-ug-0312008__ol15486424193825"><li id="dcs-ug-0312008__li1799392835619"><span>Log in to the DCS console.</span></li><li id="dcs-ug-0312008__li19668467518"><span>Click <span><img id="dcs-ug-0312008__image3516711829" src="en-us_image_0143929918.png"></span> in the upper left corner and select a region and a project.</span></li><li id="dcs-ug-0312008__li18411387341"><span>In the navigation pane, choose <strong id="dcs-ug-0312008__b149591769489">Cache Manager</strong>.</span></li><li id="dcs-ug-0312008__li25385687193825"><span>In the row containing the desired instance, choose <strong id="dcs-ug-0312008__b133427105480">More</strong> &gt; <strong id="dcs-ug-0312008__b173431210194818">Connect to Redis</strong> to go to the Web CLI login page.</span><p><p id="dcs-ug-0312008__p5969353153313"></p> <div class="section" id="dcs-ug-0312008__section321623193712"><h4 class="sectiontitle">Procedure</h4><ol id="dcs-ug-0312008__ol15486424193825"><li id="dcs-ug-0312008__li1799392835619"><span>Log in to the DCS console.</span></li><li id="dcs-ug-0312008__li19668467518"><span>Click <span><img id="dcs-ug-0312008__image3516711829" src="en-us_image_0143929918.png"></span> in the upper left corner and select a region and a project.</span></li><li id="dcs-ug-0312008__li18411387341"><span>In the navigation pane, choose <strong id="dcs-ug-0312008__b149591769489">Cache Manager</strong>.</span></li><li id="dcs-ug-0312008__li25385687193825"><span>In the row containing the desired instance, choose <strong id="dcs-ug-0312008__b133427105480">More</strong> &gt; <strong id="dcs-ug-0312008__b173431210194818">Connect to Redis</strong> to go to the Web CLI login page.</span><p><p id="dcs-ug-0312008__p5969353153313"></p>
</p></li><li id="dcs-ug-0312008__li159051391211"><span>Enter the password of the DCS instance. On Web CLI, select the current Redis database, enter a Redis command in the command box, and press <strong id="dcs-ug-0312008__b89984395451757">Enter</strong>.</span><p><div class="note" id="dcs-ug-0312008__note1764012339456"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="dcs-ug-0312008__p206401733174516">If no operation is performed for more than 5 minutes, the connection times out. You must enter the access password to connect to the instance again.</p> </p></li><li id="dcs-ug-0312008__li159051391211"><span>Enter the password of the DCS instance. On Web CLI, select the current Redis database, enter a Redis command in the command box, and press <strong id="dcs-ug-0312008__b89984395451757">Enter</strong>.</span><p><div class="note" id="dcs-ug-0312008__note1764012339456"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="dcs-ug-0312008__p206401733174516">If no operation is performed for more than 15 minutes, the connection times out. You must enter the access password to connect to the instance again.</p>
</div></div> </div></div>
</p></li></ol> </p></li></ol>
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</div></div> </div></div>
<div class="section" id="dcs-ug-0312040__en-us_topic_0148195238_section34216874"><h4 class="sectiontitle">Prerequisites</h4><p id="dcs-ug-0312040__en-us_topic_0148195238_p13442614131412">At least one DCS instance has been created.</p> <div class="section" id="dcs-ug-0312040__en-us_topic_0148195238_section34216874"><h4 class="sectiontitle">Prerequisites</h4><p id="dcs-ug-0312040__en-us_topic_0148195238_p13442614131412">At least one DCS instance has been created.</p>
</div> </div>
<div class="section" id="dcs-ug-0312040__en-us_topic_0148195238_section39516413"><h4 class="sectiontitle">Procedure</h4><ol id="dcs-ug-0312040__en-us_topic_0148195238_ol22913281193920"><li id="dcs-ug-0312040__li1799392835619"><span>Log in to the DCS console.</span></li><li id="dcs-ug-0312040__li12656143865616"><span>Click <span><img id="dcs-ug-0312040__image161443412318" src="en-us_image_0143929918.png"></span> in the upper left corner and select a region and a project.</span></li><li id="dcs-ug-0312040__li18411387341"><span>In the navigation pane, choose <strong id="dcs-ug-0312040__b1728555716519">Cache Manager</strong>.</span></li><li id="dcs-ug-0312040__en-us_topic_0148195238_li45850627193920"><span>Choose <strong id="dcs-ug-0312040__en-us_topic_0148195238_b33112329114811">More</strong> &gt; <strong id="dcs-ug-0312040__en-us_topic_0148195238_b55467034165725">Change Password</strong> in the same row as the chosen instance.</span></li><li id="dcs-ug-0312040__en-us_topic_0148195238_li18225237173632"><span>In the displayed dialog box, set <strong id="dcs-ug-0312040__b157944719110">Old Password</strong>, <strong id="dcs-ug-0312040__b16176349191111">New Password</strong>, and <strong id="dcs-ug-0312040__b10358175115111">Confirm Password</strong>.</span><p><div class="note" id="dcs-ug-0312040__en-us_topic_0148195238_note4625386415617"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="dcs-ug-0312040__en-us_topic_0148195238_p5419067515298">After 5 consecutive incorrect password attempts, the account for accessing the chosen DCS instance will be locked for 5 minutes. Passwords cannot be changed during the lockout period.</p> <div class="section" id="dcs-ug-0312040__en-us_topic_0148195238_section39516413"><h4 class="sectiontitle">Procedure</h4><ol id="dcs-ug-0312040__en-us_topic_0148195238_ol22913281193920"><li id="dcs-ug-0312040__li1799392835619"><span>Log in to the DCS console.</span></li><li id="dcs-ug-0312040__li12656143865616"><span>Click <span><img id="dcs-ug-0312040__image161443412318" src="en-us_image_0143929918.png"></span> in the upper left corner and select a region and a project.</span></li><li id="dcs-ug-0312040__li18411387341"><span>In the navigation pane, choose <strong id="dcs-ug-0312040__b1728555716519">Cache Manager</strong>.</span></li><li id="dcs-ug-0312040__en-us_topic_0148195238_li45850627193920"><span>Choose <strong id="dcs-ug-0312040__en-us_topic_0148195238_b33112329114811">More</strong> &gt; <strong id="dcs-ug-0312040__en-us_topic_0148195238_b55467034165725">Change Password</strong> in the same row as the chosen instance.</span></li><li id="dcs-ug-0312040__en-us_topic_0148195238_li18225237173632"><span>In the displayed dialog box, set <strong id="dcs-ug-0312040__b157944719110">Old Password</strong>, <strong id="dcs-ug-0312040__b16176349191111">New Password</strong>, and <strong id="dcs-ug-0312040__b10358175115111">Confirm Password</strong>.</span><p><div class="note" id="dcs-ug-0312040__en-us_topic_0148195238_note4625386415617"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="dcs-ug-0312040__en-us_topic_0148195238_p5419067515298">After 5 consecutive incorrect password attempts, the account for accessing the chosen DCS instance will be locked for 5 minutes. Passwords cannot be changed during the lockout period. You can continue other operations.</p>
<p id="dcs-ug-0312040__p43721410041">The password must meet the following requirements:</p> <p id="dcs-ug-0312040__p43721410041">The password must meet the following requirements:</p>
<ul id="dcs-ug-0312040__ul12231151134714"><li id="dcs-ug-0312040__li22311111174712">Cannot be left blank.</li><li id="dcs-ug-0312040__li19686379115">The new password cannot be the same as the old password.</li><li id="dcs-ug-0312040__li13231161174719">Can contain 8 to 32 characters.</li><li id="dcs-ug-0312040__li723118111478">Must contain at least three of the following character types:<ul id="dcs-ug-0312040__ul923141104715"><li id="dcs-ug-0312040__li1423171124710">Lowercase letters</li><li id="dcs-ug-0312040__li6231131174713">Uppercase letters</li><li id="dcs-ug-0312040__li16231311144720">Digits</li><li id="dcs-ug-0312040__li4231201111475">Special characters (`~!@#$^&amp;*()-_=+\|{},&lt;.&gt;/?)</li></ul> <ul id="dcs-ug-0312040__ul12231151134714"><li id="dcs-ug-0312040__li22311111174712">Cannot be left blank.</li><li id="dcs-ug-0312040__li19686379115">The new password cannot be the same as the old password.</li><li id="dcs-ug-0312040__li13231161174719">Can contain 8 to 32 characters.</li><li id="dcs-ug-0312040__li723118111478">Must contain at least three of the following character types:<ul id="dcs-ug-0312040__ul923141104715"><li id="dcs-ug-0312040__li1423171124710">Lowercase letters</li><li id="dcs-ug-0312040__li6231131174713">Uppercase letters</li><li id="dcs-ug-0312040__li16231311144720">Digits</li><li id="dcs-ug-0312040__li4231201111475">Special characters (`~!@#$^&amp;*()-_=+\|{},&lt;.&gt;/?)</li></ul>
</li></ul> </li></ul>

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<div class="note" id="dcs-ug-0326008__note18162172918129"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="dcs-ug-0326008__ul14162192910120"><li id="dcs-ug-0326008__li11162629121217">On the instance creation page, the default parameter templates are used by default.</li><li id="dcs-ug-0326008__li181621929131217">If you use a custom template, the selected cache engine version and instance type must match those of the template. For details about using custom templates, see <a href="dcs-ug-210622003.html">Creating a Custom Parameter Template</a>.</li></ul> <div class="note" id="dcs-ug-0326008__note18162172918129"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="dcs-ug-0326008__ul14162192910120"><li id="dcs-ug-0326008__li11162629121217">On the instance creation page, the default parameter templates are used by default.</li><li id="dcs-ug-0326008__li181621929131217">If you use a custom template, the selected cache engine version and instance type must match those of the template. For details about using custom templates, see <a href="dcs-ug-210622003.html">Creating a Custom Parameter Template</a>.</li></ul>
</div></div> </div></div>
</p></li><li id="dcs-ug-0326008__li0286162163410"><span>Choose whether to enable <strong id="dcs-ug-0326008__b926321130104046">Auto Backup</strong>.</span><p><p id="dcs-ug-0326008__p155051937173912">This parameter is displayed only when the instance type is master/standby, read/write splitting, or cluster. For more information on how to configure a backup policy, see <a href="en-us_topic_0079835992.html">Overview</a>.</p> </p></li><li id="dcs-ug-0326008__li0286162163410"><span>Choose whether to enable <strong id="dcs-ug-0326008__b926321130104046">Auto Backup</strong>.</span><p><p id="dcs-ug-0326008__p155051937173912">This parameter is displayed only when the instance type is master/standby, read/write splitting, or cluster. For more information on how to configure a backup policy, see <a href="en-us_topic_0079835992.html">Overview</a>.</p>
</p></li><li id="dcs-ug-0326008__li129684814373"><span>Specify the number of instances to create.</span></li><li id="dcs-ug-0326008__li1140718109251"><span>Enter an instance name.</span><p><p id="dcs-ug-0326008__p1292391182512">The value of <strong id="dcs-ug-0326008__b468619155415">Name</strong> contains at least 4 characters. When you create multiple instances at a time, the instances are named in the format of <em id="dcs-ug-0326008__i822360459">custom name</em>-<em id="dcs-ug-0326008__i1194974790">n</em>, where <em id="dcs-ug-0326008__i664819576">n</em> starts from 000 and is incremented by 1. For example, if you create two instances and set <strong id="dcs-ug-0326008__b1387416924">name</strong> to <strong id="dcs-ug-0326008__b375881681">dcs_demo</strong>, the two instances are respectively named as <strong id="dcs-ug-0326008__b452995924">dcs_demo-000</strong> and <strong id="dcs-ug-0326008__b908076395">dcs_demo-001</strong>.</p> </p></li><li id="dcs-ug-0326008__li129684814373"><span>Specify the number of instances to create.</span></li><li id="dcs-ug-0326008__li1140718109251"><span>Enter an instance name.</span><p><p id="dcs-ug-0326008__p1292391182512">The value of <strong id="dcs-ug-0326008__b468619155415">Name</strong> contains at least 4 characters. When you create multiple instances at a time, the instances are named in the format of <em id="dcs-ug-0326008__i93849150">custom name</em>-<em id="dcs-ug-0326008__i1598800986">n</em>, where <em id="dcs-ug-0326008__i227883133">n</em> starts from 000 and is incremented by 1. For example, if you create two instances and set <strong id="dcs-ug-0326008__b1104127939">name</strong> to <strong id="dcs-ug-0326008__b1348982561">dcs_demo</strong>, the two instances are respectively named as <strong id="dcs-ug-0326008__b1992605565">dcs_demo-000</strong> and <strong id="dcs-ug-0326008__b1267103082">dcs_demo-001</strong>.</p>
</p></li><li id="dcs-ug-0326008__en-us_topic_0148195251_li17647455231"><span>Click <strong id="dcs-ug-0326008__b10377134733720">More Settings</strong> to configure more parameters.</span><p><ol type="a" id="dcs-ug-0326008__en-us_topic_0148195251_ol179711225192412"><li id="dcs-ug-0326008__en-us_topic_0148195251_li62791011023">Enter a description of the instance.</li><li id="dcs-ug-0326008__en-us_topic_0148195251_li818212588436">Rename critical commands.<p id="dcs-ug-0326008__en-us_topic_0148195251_p12671823144417"><a name="dcs-ug-0326008__en-us_topic_0148195251_li818212588436"></a><a name="en-us_topic_0148195251_li818212588436"></a><strong id="dcs-ug-0326008__b186511426557">Command Renaming</strong> is displayed for Redis 4.0 and later. Currently, you can only rename the <strong id="dcs-ug-0326008__b161858514525">COMMAND</strong>, <strong id="dcs-ug-0326008__b61857514526">KEYS</strong>, <strong id="dcs-ug-0326008__b1118517517526">FLUSHDB</strong>, <strong id="dcs-ug-0326008__b1818525145215">FLUSHALL</strong>, <strong id="dcs-ug-0326008__b10185851155219">HGETALL</strong>, <strong id="dcs-ug-0326008__b118525155210">SCAN</strong>, <strong id="dcs-ug-0326008__b1718516515521">HSCAN</strong>, <strong id="dcs-ug-0326008__b1418675112524">SSCAN</strong>, and <strong id="dcs-ug-0326008__b31861351155215">ZSCAN</strong> commands. For Proxy Cluster instances, you can also rename the <strong id="dcs-ug-0326008__b518619514526">DBSIZE</strong> and <strong id="dcs-ug-0326008__b21861519527">DBSTATS</strong> commands.</p> </p></li><li id="dcs-ug-0326008__en-us_topic_0148195251_li17647455231"><span>Click <strong id="dcs-ug-0326008__b10377134733720">More Settings</strong> to configure more parameters.</span><p><ol type="a" id="dcs-ug-0326008__en-us_topic_0148195251_ol179711225192412"><li id="dcs-ug-0326008__en-us_topic_0148195251_li62791011023">Enter a description of the instance.</li><li id="dcs-ug-0326008__en-us_topic_0148195251_li818212588436">Rename critical commands.<p id="dcs-ug-0326008__en-us_topic_0148195251_p12671823144417"><a name="dcs-ug-0326008__en-us_topic_0148195251_li818212588436"></a><a name="en-us_topic_0148195251_li818212588436"></a><strong id="dcs-ug-0326008__b186511426557">Command Renaming</strong> is displayed for Redis 4.0 and later. Currently, you can only rename the <strong id="dcs-ug-0326008__b161858514525">COMMAND</strong>, <strong id="dcs-ug-0326008__b61857514526">KEYS</strong>, <strong id="dcs-ug-0326008__b1118517517526">FLUSHDB</strong>, <strong id="dcs-ug-0326008__b1818525145215">FLUSHALL</strong>, <strong id="dcs-ug-0326008__b10185851155219">HGETALL</strong>, <strong id="dcs-ug-0326008__b118525155210">SCAN</strong>, <strong id="dcs-ug-0326008__b1718516515521">HSCAN</strong>, <strong id="dcs-ug-0326008__b1418675112524">SSCAN</strong>, and <strong id="dcs-ug-0326008__b31861351155215">ZSCAN</strong> commands. For Proxy Cluster instances, you can also rename the <strong id="dcs-ug-0326008__b518619514526">DBSIZE</strong> and <strong id="dcs-ug-0326008__b21861519527">DBSTATS</strong> commands.</p>
</li><li id="dcs-ug-0326008__en-us_topic_0148195251_li14520142518376">Specify the maintenance window.<p id="dcs-ug-0326008__en-us_topic_0148195251_p9703134155218"><a name="dcs-ug-0326008__en-us_topic_0148195251_li14520142518376"></a><a name="en-us_topic_0148195251_li14520142518376"></a>Choose a window for DCS O&amp;M personnel to perform maintenance on your instance. You will be contacted before any maintenance activities are performed.</p> </li><li id="dcs-ug-0326008__en-us_topic_0148195251_li14520142518376">Specify the maintenance window.<p id="dcs-ug-0326008__en-us_topic_0148195251_p9703134155218"><a name="dcs-ug-0326008__en-us_topic_0148195251_li14520142518376"></a><a name="en-us_topic_0148195251_li14520142518376"></a>Choose a window for DCS O&amp;M personnel to perform maintenance on your instance. You will be contacted before any maintenance activities are performed.</p>
</li></ol> </li></ol>

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<p id="dcs-ug-1009001__p16706344103019">This function is supported by DCS Redis 4.0 instances and later.</p> <p id="dcs-ug-1009001__p16706344103019">This function is supported by DCS Redis 4.0 instances and later.</p>
<div class="section" id="dcs-ug-1009001__section173422026132015"><h4 class="sectiontitle">Procedure</h4><ol id="dcs-ug-1009001__ol143711508198"><li id="dcs-ug-1009001__li1799392835619"><span>Log in to the DCS console.</span></li><li id="dcs-ug-1009001__li8245059012"><span>Click <span><img id="dcs-ug-1009001__image11567165617456" src="en-us_image_0143929918.png"></span> in the upper left corner and select a region and a project.</span></li><li id="dcs-ug-1009001__li18411387341"><span>In the navigation pane, choose <strong id="dcs-ug-1009001__b9411593117">Cache Manager</strong>.</span></li><li id="dcs-ug-1009001__li19501824184620"><span>Click the name of a DCS instance.</span></li><li id="dcs-ug-1009001__li34099825515"><span>Click <strong id="dcs-ug-1009001__b11266227133813">Run Logs</strong>. </span></li><li id="dcs-ug-1009001__li35161854131919"><span>Click <strong id="dcs-ug-1009001__b131200271937">Create Log File</strong>.</span><p><p id="dcs-ug-1009001__p08629063319">For a master/standby, read/write splitting, or cluster instance, logs will be collected from the specified shard and replica. If the instance is the single-node type, logs of the only node of the instance will be collected.</p> <div class="section" id="dcs-ug-1009001__section173422026132015"><h4 class="sectiontitle">Procedure</h4><ol id="dcs-ug-1009001__ol143711508198"><li id="dcs-ug-1009001__li1799392835619"><span>Log in to the DCS console.</span></li><li id="dcs-ug-1009001__li8245059012"><span>Click <span><img id="dcs-ug-1009001__image11567165617456" src="en-us_image_0143929918.png"></span> in the upper left corner and select a region and a project.</span></li><li id="dcs-ug-1009001__li18411387341"><span>In the navigation pane, choose <strong id="dcs-ug-1009001__b9411593117">Cache Manager</strong>.</span></li><li id="dcs-ug-1009001__li19501824184620"><span>Click the name of a DCS instance.</span></li><li id="dcs-ug-1009001__li34099825515"><span>Click <strong id="dcs-ug-1009001__b11266227133813">Run Logs</strong>. </span></li><li id="dcs-ug-1009001__li35161854131919"><span>Click <strong id="dcs-ug-1009001__b131200271937">Create Log File</strong>.</span><p><p id="dcs-ug-1009001__p08629063319">For a master/standby, read/write splitting, or cluster instance, logs will be collected from the specified shard and replica. If the instance is the single-node type, logs of the only node of the instance will be collected.</p>
<p id="dcs-ug-1009001__p5599146104419">Select the collection period and click <strong id="dcs-ug-1009001__b14367556522">OK</strong>.</p> <p id="dcs-ug-1009001__p5599146104419">Select the collection period and click <strong id="dcs-ug-1009001__b14367556522">OK</strong>.</p>
</p></li><li id="dcs-ug-1009001__li42294573540"><span>After the log file is successfully collected, click <strong id="dcs-ug-1009001__b10457101485211">Download</strong> to download it.</span></li></ol> </p></li><li id="dcs-ug-1009001__li42294573540"><span>After the log file is successfully collected, click <strong id="dcs-ug-1009001__b10457101485211">Download</strong> to download it.</span><p><div class="note" id="dcs-ug-1009001__note1439423131814"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="dcs-ug-1009001__ul250852218"><li id="dcs-ug-1009001__li14502532117">Log files are retained for seven days. Download them if necessary.</li><li id="dcs-ug-1009001__li19501512115">The Redis kernel generates few logs, so your selected period may contain no log.</li></ul>
</div></div>
</p></li></ol>
</div> </div>
</div> </div>
<div> <div>

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<h1 class="topictitle1">Connecting to Redis on Lettuce (Java)</h1> <h1 class="topictitle1">Connecting to Redis on Lettuce (Java)</h1>
<div id="body8662426"><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p8060118">This section describes how to access a Redis instance on Lettuce. For more information about how to use other Redis clients, visit <a href="https://redis.io/clients" target="_blank" rel="noopener noreferrer">the Redis official website</a>.</p> <div id="body8662426"><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p8060118">This section describes how to access a Redis instance on Lettuce. For more information about how to use other Redis clients, visit <a href="https://redis.io/clients" target="_blank" rel="noopener noreferrer">the Redis official website</a>.</p>
<p id="dcs-ug-211105002__en-us_topic_0000001220636227_p11317173314212">Spring Data Redis is already integrated with <a href="https://github.com/redis/jedis" target="_blank" rel="noopener noreferrer">Jedis</a> and <a href="https://github.com/lettuce-io/lettuce-core" target="_blank" rel="noopener noreferrer">Lettuce</a> for Spring Boot projects. In addition, Spring Boot 1.x is integrated with Jedis, and Spring Boot 2.x with Lettuce. Therefore, you do not need to import Lettuce in Spring Boot 2.x and later projects.</p> <p id="dcs-ug-211105002__en-us_topic_0000001220636227_p11317173314212">Spring Data Redis is already integrated with <a href="https://github.com/redis/jedis" target="_blank" rel="noopener noreferrer">Jedis</a> and <a href="https://github.com/lettuce-io/lettuce-core" target="_blank" rel="noopener noreferrer">Lettuce</a> for Spring Boot projects. In addition, Spring Boot 1.x is integrated with Jedis, and Spring Boot 2.x with Lettuce. Therefore, you do not need to import Lettuce in Spring Boot 2.x and later projects.</p>
<div class="note" id="dcs-ug-211105002__en-us_topic_0000001220636227_note11739162152"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p15346153915519">Springboot 2.3.12.RELEASE or later is required. Lettuce <a href="https://github.com/redis/lettuce/releases/tag/6.3.0.RELEASE" target="_blank" rel="noopener noreferrer">6.3.0.RELEASE</a> or later is required.</p> <div class="section" id="dcs-ug-211105002__en-us_topic_0000001220636227_section19530153352416"><h4 class="sectiontitle">Notes and Constraints</h4><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p106494213248">Springboot 2.3.12.RELEASE or later is required. Lettuce <a href="https://github.com/redis/lettuce/releases/tag/6.3.0.RELEASE" target="_blank" rel="noopener noreferrer">6.3.0.RELEASE</a> or later is required.</p>
</div></div> </div>
<div class="section" id="dcs-ug-211105002__en-us_topic_0000001220636227_section1502270695932"><h4 class="sectiontitle">Prerequisites</h4><ul id="dcs-ug-211105002__en-us_topic_0000001220636227_ul46828691102415"><li id="dcs-ug-211105002__en-us_topic_0000001220636227_li7215915117">A Redis instance is created, and is in the <strong id="dcs-ug-211105002__en-us_topic_0000001220636227_en-us_topic_0148195299_b046893535412">Running</strong> state. </li><li id="dcs-ug-211105002__en-us_topic_0000001220636227_li19290125094319">View the IP address/domain name and port number of the DCS Redis instance to be accessed. For details, see <a href="dcs-ug-0312016.html">Viewing and Modifying DCS Instance Information</a>.</li></ul> <div class="section" id="dcs-ug-211105002__en-us_topic_0000001220636227_section1502270695932"><h4 class="sectiontitle">Prerequisites</h4><ul id="dcs-ug-211105002__en-us_topic_0000001220636227_ul46828691102415"><li id="dcs-ug-211105002__en-us_topic_0000001220636227_li7215915117">A Redis instance is created, and is in the <strong id="dcs-ug-211105002__en-us_topic_0000001220636227_en-us_topic_0148195299_b046893535412">Running</strong> state. </li><li id="dcs-ug-211105002__en-us_topic_0000001220636227_li19290125094319">View the IP address/domain name and port number of the DCS Redis instance to be accessed. For details, see <a href="dcs-ug-0312016.html">Viewing and Modifying DCS Instance Information</a>.</li></ul>
</div> </div>
<div class="section" id="dcs-ug-211105002__en-us_topic_0000001220636227_section4771195210217"><h4 class="sectiontitle">Pom Configuration</h4><pre class="screen" id="dcs-ug-211105002__en-us_topic_0000001220636227_screen1444712164">&lt;!-- Enable Spring Data Redis, Lettuce-supported SDK is integrated by default --&gt; <div class="section" id="dcs-ug-211105002__en-us_topic_0000001220636227_section4771195210217"><h4 class="sectiontitle">Pom Configuration</h4><pre class="screen" id="dcs-ug-211105002__en-us_topic_0000001220636227_screen1444712164">&lt;!-- Enable Spring Data Redis, Lettuce-supported SDK is integrated by default --&gt;
@ -898,23 +898,23 @@ public LettuceClientConfiguration clientConfiguration() {
</tr> </tr>
<tr id="dcs-ug-211105002__en-us_topic_0000001220636227_row1081813217289"><td class="cellrowborder" valign="top" width="22.55225522552255%" headers="mcps1.3.9.9.2.4.1.1 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p128188321283">softMinEvictableIdleTimeMillis</p> <tr id="dcs-ug-211105002__en-us_topic_0000001220636227_row1081813217289"><td class="cellrowborder" valign="top" width="22.55225522552255%" headers="mcps1.3.9.9.2.4.1.1 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p128188321283">softMinEvictableIdleTimeMillis</p>
</td> </td>
<td class="cellrowborder" valign="top" width="18.751875187518753%" headers="mcps1.3.9.9.2.4.1.2 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p1481823218282">1800000</p> <td class="cellrowborder" valign="top" width="18.751875187518753%" headers="mcps1.3.9.9.2.4.1.2 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p1481823218282">-1</p>
</td> </td>
<td class="cellrowborder" valign="top" width="58.69586958695869%" headers="mcps1.3.9.9.2.4.1.3 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p128181032112817">Duration after which idle connections are evicted. If the idle duration is greater than this value and the maximum number of idle connections is reached, idle connections are directly evicted.</p> <td class="cellrowborder" valign="top" width="58.69586958695869%" headers="mcps1.3.9.9.2.4.1.3 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p128181032112817">Duration (in milliseconds) after which idle connections are evicted. If the idle duration is greater than this value and the maximum number of idle connections is reached, idle connections are directly evicted. Recommended value: <span class="parmvalue" id="dcs-ug-211105002__en-us_topic_0000001220636227_parmvalue52173623312"><b>1800000</b></span>.</p>
</td> </td>
</tr> </tr>
<tr id="dcs-ug-211105002__en-us_topic_0000001220636227_row310620335284"><td class="cellrowborder" valign="top" width="22.55225522552255%" headers="mcps1.3.9.9.2.4.1.1 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p18106183392810">minEvictableIdleTimeMillis</p> <tr id="dcs-ug-211105002__en-us_topic_0000001220636227_row310620335284"><td class="cellrowborder" valign="top" width="22.55225522552255%" headers="mcps1.3.9.9.2.4.1.1 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p18106183392810">minEvictableIdleTimeMillis</p>
</td> </td>
<td class="cellrowborder" valign="top" width="18.751875187518753%" headers="mcps1.3.9.9.2.4.1.2 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p1310743314288">60000</p> <td class="cellrowborder" valign="top" width="18.751875187518753%" headers="mcps1.3.9.9.2.4.1.2 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p1310743314288">1800000</p>
</td> </td>
<td class="cellrowborder" valign="top" width="58.69586958695869%" headers="mcps1.3.9.9.2.4.1.3 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p110783316286">An eviction policy, set to <strong id="dcs-ug-211105002__en-us_topic_0000001220636227_b14258845648">–1</strong> (suggested) to disable it. Use <strong id="dcs-ug-211105002__en-us_topic_0000001220636227_b14710819952">softminEvictableIdleTimeMillis</strong> instead.</p> <td class="cellrowborder" valign="top" width="58.69586958695869%" headers="mcps1.3.9.9.2.4.1.3 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p110783316286">An eviction policy, set to <strong id="dcs-ug-211105002__en-us_topic_0000001220636227_b14258845648">–1</strong> (suggested) to disable it. Use <strong id="dcs-ug-211105002__en-us_topic_0000001220636227_b14710819952">softminEvictableIdleTimeMillis</strong> instead.</p>
</td> </td>
</tr> </tr>
<tr id="dcs-ug-211105002__en-us_topic_0000001220636227_row93734330285"><td class="cellrowborder" valign="top" width="22.55225522552255%" headers="mcps1.3.9.9.2.4.1.1 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p73731330282">timeBetweenEvictionRunsMillis</p> <tr id="dcs-ug-211105002__en-us_topic_0000001220636227_row93734330285"><td class="cellrowborder" valign="top" width="22.55225522552255%" headers="mcps1.3.9.9.2.4.1.1 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p73731330282">timeBetweenEvictionRunsMillis</p>
</td> </td>
<td class="cellrowborder" valign="top" width="18.751875187518753%" headers="mcps1.3.9.9.2.4.1.2 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p17373203322814">60000</p> <td class="cellrowborder" valign="top" width="18.751875187518753%" headers="mcps1.3.9.9.2.4.1.2 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p17373203322814">-1</p>
</td> </td>
<td class="cellrowborder" valign="top" width="58.69586958695869%" headers="mcps1.3.9.9.2.4.1.3 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p53748332282">Eviction interval, in milliseconds.</p> <td class="cellrowborder" valign="top" width="58.69586958695869%" headers="mcps1.3.9.9.2.4.1.3 "><p id="dcs-ug-211105002__en-us_topic_0000001220636227_p53748332282">Eviction interval, in milliseconds. Recommended value: <span class="parmvalue" id="dcs-ug-211105002__en-us_topic_0000001220636227_parmvalue161111252193412"><b>60000</b></span></p>
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