Community Blog

When I started learning tennis as an adult, I realized that what made tennis difficult was not learning the tennis strokes, instead it was learning to realize t...

A database migration can be syntactically correct and still be a poor release candidate. A regular index build can block writes, an ALTER TABLE may wait behind ...

When setting up a new database for an application, high availability (HA) is one of the main priorities. Let’s assume for this example that you chose to use a P...

When activity spreads across GitHub, the forum, and content, real contribution is easy to lose in the noise. A community program only works when people trust th...

Two recent posts on the Percona blog caught my attention. In Replicating from InnoDB into a DuckDB storage engine and The DuckDB MySQL engine at 500 GB, Evgeniy...

Back in February, I wrote about Hackorum, a forum style web view of the pg-hackers mailing list. If you missed that post, you can read it here first. It turns t...

I would like to introduce here the curious case that I had on a Patroni Cluster in production, after a migration from Oracle, with timezone differences between ...

Every great journey needs a guide....

Over the years working on various MongoDB troubleshooting cases, I’ve been wondering how to handle the longish JSON outputs from the most common diagnostic comm...

What’s the impact of TDE on performance? People usually quickly throw together a few graphs with basic measurements and treat that as a complete answer, but the...

On July 9–10, the two of us - Sandra (Engineering, Percona for MongoDB) and Radek (Product, Percona for MongoDB) - packed our backpacks and headed to Berlin for...

You filed a bug report at 11pm because you’d already done the work to isolate it. You answered a forum question that had been sitting unanswered for three days....

Recently we noticed a LinkedIn post promoting open_pg_tde, a fork of our pg_tde, claiming to be more open. I looked at the repository, and have to disagree with...

A MySQL InnoDB Cluster provides high availability for a single database cluster using Group Replication. This works well for node failures inside the cluster, b...

Vacuum, or more precisely autovacuum, is the most important automatic maintenance task in PostgreSQL. It is key for performance, but also for long-term database...