Planet MySQL HA Blog

You filed a bug report at 11pm because you’d already done the work to isolate it. You answered a forum question that had been sitting unanswered for three days. You wrote a PR. You spent an hour on a call telling us what’s broken about a tool you use every day. None of that is small, and none of it should go unnoticed.

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The inaugural MySQL Contributor Summit, held in May 2026, brought together Oracle engineers, customers, partners, and members of the open source community for a full day of technical collaboration focused on the future of MySQL. The Summit featured more than 20 sessions covering topics including AI integration, performance, observability, replication, developer experience, extensibility, and community […]

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With the new LTS (Long Term Support) release of MySQL 9.7.0 https://dev.mysql.com/doc/relnotes/mysql/9.7/en/ , Dynamic Data Masking (DDM) is one of the new features introduced as part of Enterprise Edition. The recent blog by Mike Frank, MySQL Product Management Director, details why DDM is important in every industry where PII (Personal Identifiable Information) data is stored […]

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TL;DR If you use MD5(), SHA1(), or SHA() in MySQL today, start planning the move to SHA2(). Beginning with MySQL 9.6, MD5(), SHA1(), and SHA() are no longer native built-in SQL functions in the server binary. They are available through the Legacy Hashing Component: That component should be treated as a stopgap solution. It gives […]

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Recently we noticed a LinkedIn post promoting open_pg_tde, a fork of our pg_tde, claiming to be more open. I looked at the repository, and have to disagree with their claim. In this blog post, I’ll explain why.

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A MySQL InnoDB Cluster provides high availability for a single database cluster using Group Replication. This works well for node failures inside the cluster, but disaster recovery usually requires another cluster in a separate location: another Kubernetes cluster, region, data center, or cloud.

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MySQL 26.7 is the initial MySQL Innovation release following the MySQL 9.7 LTS release and uses the new yy.mmCalVer versioning model for quarterly Innovation releases. This Early Access release provides a preview of selected functionality planned for the MySQL Community Server package and gives users an opportunity to evaluate upcoming changes before general availability. Download MySQL […]

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Keeping up with the MySQL ecosystem is becoming increasingly challenging. Every release introduces new features, performance improvements, security enhancements, and cloud capabilities. While the official documentation is comprehensive, it is not always easy to quickly identify what really matters.

To help with that, I've published a new edition of my MySQL & MySQL HeatWave Report, covering the most important announcements around MySQL 9.7 LTS and MySQL HeatWave 9.7.
Slides: https://speakerdeck.com/freshdaz/mysql-and-mysql-heatwave-report-june-2026

The post MySQL…

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Vacuum, or more precisely autovacuum, is the most important automatic maintenance task in PostgreSQL. It is key for performance, but also for long-term database survival. If it runs too often, it can damage performance. If it does not run often enough, performance can suffer. With too few workers, it takes too long. With too many, it consumes resources. If the maintenance work memory is not enough, the load can multiply due to multiple index scans. If you disable it completely, it will rise from the dead and run without limits.

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Or: Surviving the Codership Acquisition Without Losing Your Cluster Why this long post?

Recently, the database landscape shifted significantly when MariaDB plc absorbed Codership. If you aren't familiar, Codership is the company that introduced the Galera library and the WSREP API to MySQL, creating the first virtually synchronous replication solution for the MySQL ecosystem. For years, they produced their own highly stable, patched version of MySQL + Galera, which was widely adopted alongside solutions like Percona XtraDB Cluster (PXC).

The Post-Acquisition…

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