The Percona Database Performance Blog

MongoDB 9.0: More 8.4 than 9.0?

MongoDB 9.0 is here. Strip away the marketing around AI, Atlas, and “the best version ever built”, and MongoDB 9.0 starts to look a lot like MongoDB 8...

PGO or not PGO this is the dilemma. Step 3

Step 3: Why my sysbench-trained build loses and how to do it right. Given the topic complexity and the length of this article I have split it in 3 thr...

PGO or not PGO this is the dilemma. Step 2

Step 2: How it works Given the topic complexity and the length of this article I have split it in 3 three different blog-post: What is PGO How PGO it ...

PGO or not PGO this is the dilemma. Step 1

Given the topic complexity and the length of this article I have split it in 3 three different blog-post: What is PGO How PGO it works Why my sysbench...

Your Galera cluster’s hardest problem was never the replication library

Ask anyone who runs a multi-node MySQL Galera Cluster in production about their worst night. Almost nobody says write-set replication was wrong. They ...

DBTrail: Analytical Reports on Your MySQL Data, Without Running Them on MySQL – Part 1

MySQL is very good at serving application workloads, but things get more complicated when somebody decides to run a large report on the same server. A...

Percona ClusterSync for MongoDB 1.0.0 is Generally Available

On behalf of the entire product and engineering team, I’m pleased to announce that Percona ClusterSync for MongoDB (PCSM) 1.0.0 is now generally avail...

What Is Running on My MongoDB Right Now? Real-Time Analytics in PMM

The Problem The application is slow, the Slack channel is on fire, and somebody asks the oldest question in our job: What is running on the database r...

Thread Pool in Percona Server and MySQL (Part 1)

Thread Pool in Percona Server and MySQL (Part 1) A new version of Community MySQL Server July release contains two versions 26.7.0 and 9.7.2. It is an...

Tuning Percona ClusterSync for MongoDB Performance

Percona ClusterSync for MongoDB (PCSM) synchronizes data from a source MongoDB cluster (including Atlas) to a target MongoDB cluster in two stages. It...