As with any new releases, MySQL 8.0.21 introduces many new improvements and updates, many of which deserve their own blog post for a deep dive into the new features. Among the notable changes are: Account Management Notes, JSON Notes, Authentication Notes and changes related to InnoDB, Optimizer, Group Replication, and more.
Here are the MySQL 8.0.21 top blog posts:
Server:
- The MySQL 8.0.21 Maintenance Release is Generally Available
- MySQL 8.0 – Who stopped mysqld and how long did it take?
- MySQL: who’s filling my error log?
Shell:
- MySQL Shell Dump & Load part 1: Demo!
- MySQL Shell Dump & Load part 2: Benchmarks
Optimizer:
- PHP With MySQL: JSON_VALUE() now in MySQL 8.0.21
InnoDB:
- MySQL – Keep an eye on your auto_increment values
Replication:
- MySQL 8.0.21 Replication Enhancements
- More Robust Network Partition Handling in Group Replication
- START GROUP_REPLICATION can now take recovery credentials as parameters
- Group Replication SYSTEM messages in the error log
- Specify Recovery IP Addresses in Group Replication
- MySQL Group Replication – Default response to network partitions has changed
- You Can Now Use Binary Log Checksums with Group Replication
Security:
- Help with MySQL and Data for PHP Developers
Certifications:
- MySQL 8.0 Certifications
community blogs:
- MySQL 8.0.21: thank you for the contributions
- Changes that I like in the new MySQL 8.0.21
Download MySQL 8.0.21 now: https://www.mysql.com/downloads/