8.0.40 Fourth Release Version

This version includes the following improvements over the second version:

1. Mitigating performance degradation issues in bulk inserts.
2. Providing a binary PGO version of MySQL for the CentOS platform, with excellent performance.
3. Further removed interfering test cases.

8.0.40 Third Release Version

This version includes the following improvements over the second version:

1. Fixed the join performance degradation issue since 8.0.28.
2. Further removed interfering test cases.

8.0.40 Second Release Version

This version includes the following improvements over the first version:

1. Fixes the issue of Group Replication stalling when handling large transactions
2. Stabilizes test cases.

8.0.40 First Release Version

This version includes the following improvements over the official version:

1. Improve innoDB storage engine scalability
2. Redo log optimization
3. Resolution of performance degradation issues in certain scenarios related to query execution plans
4. Binlog group commit optimization
5. Memory usage optimization
6. High availability enhancements
7. Secondary replay architecture optimization
8. Other minor optimizations.