The Percona Database Performance Blog

The diagnostic data MongoDB Atlas doesn’t hand you

The diagnostic data MongoDB Atlas doesn’t hand you Every MongoDB server keeps a flight recorder. It’s called FTDC, Full Time Diagnostic Da...

Stored Procedures memory consumption in Percona Server for MySQL

1. What it is about This investigation began as a performance comparison for different memory allocators. However, during benchmarking, I discovered u...

Percona Server for MongoDB 8.3 Technical Preview Is Now Available

Percona Server for MongoDB 8.3 is available today as a Technical Preview. It is not for production. It is for your lab, your staging cluster, and your...

Alert on CVEs in Your Percona Tools for MongoDB on Day One

TL;DR: Starting with PBM 2.15.0 and PCSM 0.9.0, every release artifact – binary tarballs, RPM and DEB packages, and Docker images – ships ...

Percona Operator for MongoDB 1.23.0: ClusterSync Migration, Vector Search, and PVC Snapshot Backups

Percona Operator for MongoDB 1.23.0 makes the operator a place you move to, not just a place you start. A new ClusterSync component clones a live sour...

How to Migrate from MySQL Galera Cluster to Percona XtraDB Cluster

On December 1, 2025, MariaDB announced that MySQL Galera Cluster will reach end of life on September 30, 2026. After that date, the MySQL build of Gal...

PostgreSQL Meta Commands that save time every day

When most people start working with PostgreSQL, they quickly learn SQL: Transact-SQL SELECT * FROM employees; ...

Inside MySQL 9.7 LTS Features

MySQL 9.7, a Long-Term Support (LTS) release, incorporates a variety of potential features spanning across multiple technical domains. This article co...

MyDumper Locking Mechanisms Revisited: Introducing SAFE_NO_LOCK

About a year ago, we discussed how MyDumper refactored its locking mechanisms to move away from old, rigid flags and transitioned towards more flexibl...

Running DuckDB as a MySQL 9.7 storage engine

ducksdb-mysql-engine is an experimental build of MySQL 9.7 where a table you mark ENGINE=DuckDB answers analytical queries from DuckDB instead of Inno...