The Percona Database Performance Blog

Enabling TLS in PXC without Downtime

Starting with Percona XtraDB Cluster (PXC) 8.0, replication traffic encryption is enabled by default. That said, it’s common to find clusters ru...

Percona Operator for PostgreSQL 3.1.0: Transparent Data Encryption, Logical Replicas, and Persistent Logging

Percona Operator for PostgreSQL 3.1.0 takes on three things that decide whether a PostgreSQL platform passes review: is the data encrypted at rest, ca...

Meet pgstef: Why Stefan Fercot Joined Percona, and Why You Should Find Him at Percona Live Amsterdam

If you have spent any time in the Postgres community, you already know the name pgstef. Stefan Fercot has spent years as one of the most visible advoc...

Mongorewind: Rewind Your MongoDB Test Data Without Restoring a Backup

Mongorewind: Rewind Your MongoDB Test Data Without Restoring a Backup One day, my friend Martín told me about a problem he and his team were dealing w...

OpenID Connect Authentication for MySQL, Now Fully Open Source

Percona Server for MySQL now ships with a fully open source OpenID Connect (OIDC) authentication plugin, available starting with Percona Server for My...

Rotating Expiring X.509 Certificates in Percona Server for MongoDB with Minimal Service Interruption

Expired TLS certificates can prevent new client connections and, when X.509 is used for Percona Server for MongoDB internal authentication, also preve...

Benchmarking vector indexes

Nearly every database has vector search now, and every one of them has a blog post with a big number in it. Almost none of those numbers can be checke...

Performance Progression of Percona Server for MySQL 8.4

1. Purpose and scope This performance investigation aims to look into the read/write performance of Percona Server for MySQL 8.4 and how it changed be...

Navigating the Walled Gardens of PostgreSQL: Hidden Risks of Postgres Vendor Lock-in

These days there’s been a lot of talk about Postgres having an impact on “everything”. Whether it’s replacing legacy systems, ...

Replication Lag on AWS FSx: The Hidden EC2 Single-Flow Bandwidth Limit

A recent case in our Percona Support team started with a familiar complaint. A PostgreSQL standby lagging behind its primary. Although the problem was...