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Kernel Versions

Updated on 2025-01-02 GMT+08:00

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

Version

Description

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

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.
  • Resolved the issue that the set autocommit setting is synchronized to read replicas after transaction splitting is enabled.

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.

2.3.9.0

  • New features

    Added database proxy metrics Front-End Connections Created per Second, Transaction Queries per Second, and Multi-Statement Queries per Second. For details, see Table 2.

  • Resolved issues
    • Optimized the database proxy performance.
    • Resolved traffic congestion occurring when your applications connect to database proxy over short connections.

2.3.8.0

  • New features

    Real client IP addresses can be obtained through database proxies.

  • Resolved issues
    • Fixed the issue that monitoring data of database proxy is inaccurate.
    • Shortened the downtime of database proxies during a primary/standby switchover.

2.3.6.0

  • Fixed the issue of connection failures caused by database overload.
  • Improved proxies' compatibility with MySQL protocols.

2.3.1.0

  • Maintaining connectivity between clients and database proxies.
  • Monitoring metrics of database proxies. For details, see Table 2.

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