Planet MySQL HA Blog

We often hear that open source is about people.

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MySQL Enterprise Edition includes powerful audit filtering capabilities, but writing audit filter JSON by hand can be tedious and error-prone. The JSON model is flexible, which is exactly what makes it useful, but it also means that a small typo, a missing event class, or an incorrectly assigned user can change what does or does […]

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For over 30 years, MySQL has grown through the contributions, feedback, and collaboration of a global community of developers, database administrators, customers, partners, educators, and open source advocates. That community has helped make MySQL one of the world’s most widely used open source databases. As the ecosystem continues to grow and evolve, so do the opportunities for collaboration.  Over the past year, we have […]

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MySQL HeatWave Service (MHS) on Oracle Cloud Infrastructure (OCI) already provides multiple ways to create a new DB system, such as restoring from a backup, using Point-in-Time Recovery (PITR), or importing data from Object Storage. However, when creating a new DB system from an existing DB system, especially in another region, the process required several sequential […]

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This lesson should have been learned with the CREATE TABLE of death, but it is worth a refresh. Do not uselessly grant CREATE and ALTER TABLE The reason I am posting this reminder is that another crashing bug related to DDL came to my attention.  This bug is only fixed in a recent version of MySQL (probably not affecting 5.6 and 5.7), so if you are running the latest 8.0 or 8.4, you should

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On April 21st, 2026, we released MySQL 9.7.0, the latest Long-Term Support release. As always, we are grateful to the MySQL community for helping improve MySQL with bug reports, patches, pull requests, and continued feedback. Community contributions help make MySQL better for everyone, and we are happy to recognize the contributors whose work was included […]

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Understanding the New Cadence: Quarterly CPUs, Targeted CSPUs, and Transitioning to Calendar Versioning MySQL is updating its release model to make releases easier to understand, plan for, and follow: The goal is not simply to change the number on a release. The goal is to give users, DBAs, developers, Linux distributions, cloud platforms, and ecosystem […]

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Let’s be honest: migrating a relational database to Kubernetes sounds fantastic in a whiteboard meeting, but the reality of day-two operations is a completely different story.

When moving MySQL to Kubernetes, the ultimate goal is simple: identify a safe, performant set of configuration values for your database pods. But where do you start? Usually, you look at your overall node resources say, a machine with 16 CPUs and 64GB of RAM.

In the old bare-metal days, you'd apply the standard rules of thumb:

• Set innodb_buffer_pool_size to 60-80% of total RAM to…

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Overview

When building high-availability MySQL environments, the choice between MySQL Group Replication (GR) and Percona XtraDB Cluster (PXC) often comes down to how they handle the eternal database dilemma: data consistency versus performance.       

While both provide "synchronous-like" replication, they approach the problem of stale reads—reading data that has been committed on one node but not yet applied on another—in distinct ways. Understanding these differences, and the performance penalties associated with fixing them, is critical for any…

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Multi-Cluster MongoDB on GKE with MCS Guide Ivan Groenewold, Technical Lead, Percona MongoDB, and I put together a detailed step-by-step guide on deploying the Percona Operator for MongoDB across two GKE clusters using Multi-Cluster Services (MCS)

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