The Percona Database Performance Blog

Migrate from Crunchy Data PostgreSQL Operator to Percona PostgreSQL Operator: Standby Cluster Method

A Crunchy to Percona PostgreSQL migration is more straightforward than most cross-operator moves on Kubernetes, because the Percona PostgreSQL Operato...

MySQL 9.7.0 PGO Benchmark Analysis

Overview Servers Tested: MySQL 9.7.0 (PGO-enabled build released by Oracle) MySQL 9.7.0 Non-PGO (built without Profile-Guided Optimization — see BUILD...

CVE-2026-8053: “We don’t use time-series” is not a mitigation

TL;DR: A bug in MongoDB’s time-series collection code allows a user with the standard readWrite role to corrupt memory within the mongod process...

Manually Migrate Hash Slots in a Valkey/Redis Cluster

This article explains how to manually migrate hash slots in Valkey/Redis clusters to expand your deployment with minimal disruption to availability. N...

Not All Open Source Is Equal: Choosing a PostgreSQL Operator for Kubernetes in 2026

Choosing an open source PostgreSQL operator for Kubernetes used to be a question about features and community size. In 2026, it has become a question ...

Keeping pgBackRest Open, Healthy, and Community Driven

When the future of pgBackRest suddenly became uncertain, the PostgreSQL ecosystem reacted quickly. At Percona, we believed the most important question...

Bringing pt-query-digest-Style Slow Query Analysis to PostgreSQL with pg_enhanced_query_logging

In this blog post, we are going to briefly discuss pg_enhanced_query_logging (PEQL for short), a PostgreSQL extension that produces slow query logs in...

PSMDB Sandbox: A Browser-Based UI for Deploying MongoDB with Terraform and Ansible

If you’ve ever wrestled with .tfvars files, juggled Ansible inventory paths, or tried to remember the exact command sequence for a MongoDB setup...

I Know Kung Fu

You might find this hard to believe, but AI has become kind of a thing around here. Bennie published a post on our Build with AI competition last week...

Curious case of PXC node that refused to start due to SSL

In this blog, I am going to share a real-world debugging case study where a routine Percona XtraDB Cluster node restart led to an unexpected failure. ...