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Kernel Versions

The following table describes the updates in each kernel version of RDS for MySQL database proxy.

Version	Description
2.25.06.000	New features Support for SQL mode PAD_CHAR_TO_FULL_LENGTH Resolved issues Optimized the Prepare Close processing logic.
2.25.03.000	New features Read-only transactions supported for read-only proxies
2.24.12.000	Resolved issues Optimized the slow query log processing logic. Optimized .NET client adaptation.
2.24.09.020	New features Support for IPv6 Resolved issues Resolved the issue that proxy resource reclamation is slow after SSL is enabled. Resolved the issue that read requests cannot be split from write requests after transaction splitting is enabled with set autocommit set to 0 and commit used to commit transactions.
2.24.06.000	Resolved issues Resolved the issue that SELECT statements starting with ( are sent to the primary instance.
2.23.12.000	New features Reduced proxy authentication synchronization latency, so that new accounts and databases can be synchronized more quickly. Full-link error tracking Display of slow SQL statements recorded by database proxy
2.23.09.002	Resolved issues Optimized the logic for the proxy to retry service SQL statements after the instance breaks down.
2.23.09.001	Resolved issues Fixed the issue that an error is occasionally reported during execution of the prepared SELECT FOR UPDATE statement.
2.23.09.000	New features Change User protocol Parsing of multiple hints show processlist and kill commands Resolved the issue that the set autocommit setting is synchronized to read replicas after transaction splitting is enabled.
2.23.06.001	Resolved issues Resolved the increased backend database connections caused by enabling session connection pool.
2.23.06.000	New features Binlog pulling through the proxy kernel Resolved issues Optimized the performance of the prepare stmt protocol again.
2.23.02.007	Resolved issues Optimized the performance of the prepare stmt protocol. Resolved unexpected traffic allocation of the /* FORCE_SLAVE*/ Hint statement.
2.23.02.000	Resolved issues Optimized the database proxy performance.
2.22.11.000	New features Multi-statement processing modes Resolved issues Optimized the error messages reported during SQL statement execution in some scenarios.
2.22.07.000	New features Session-level connection pooling Dynamic load balancing Resolved issues Optimized the logic for setting session-level transaction isolation levels of database proxies. By default, the transaction isolation levels are synchronized with those of the database.
2.7.5.0	Application Lossless and Transparent (ALT)
2.7.4.0	New features A query for more than 16 MB of data Resolved issues Optimized the way how metrics of read-only proxies are collected by Cloud Eye.
2.3.9.8	New features Batch execution of prepared statements
2.3.9.7	New features Support for MySQL 8.0 Transaction splitting Read-only mode Resolved issues Optimized the execution logic of prepared statements to improve performance.

Parent topic: Database Proxy (Read/Write Splitting)