Petr Jelinek

Petr Jelinek is VP and Chief Architect at EDB, where he leads the development of Postgres Distributed (PGD), EDB’s active-active high availability solution for PostgreSQL. In addition to his work on distributed systems, he contributes to the integration of PostgreSQL with analytics engines and storage platforms, expanding its capabilities in modern data environments.

Petr has over 15 years of experience building PostgreSQL replication, data movement, and high availability across companies such as EDB, 2ndQuadrant, Microsoft, and Skype.

A major contributor to PostgreSQL, Petr has been actively involved in the community for two decades, with key features to his credit including logical replication, DO, and TABLESAMPLE. His earlier contributions include work on pglogical and PgBouncer, and his focus remains on distributed systems, replication, and core database architecture.

Read Blogs

Technical Blog
PostgreSQL has come a long way from its early days as a single-node database. If you’ve worked with PostgreSQL for a while, you’ll know its journey to robust logical replication was anything but straightforward, shaped by community efforts, creative workarounds, and an ever-evolving need for high availability and flexibility. Having been closely involved in projects like londiste, pglogical, multiple iterations of PGD (BDR) and the built-in logical replication in PostgreSQL itself, I’ve had the privilege of witnessing and contributing to this transformation firsthand.
Technical Blog
One of the headline features of the brand new PostgreSQL release out 2 months ago is Logical Replication. Logical replication allows more flexibility than physical replication, including replication between different major versions of PostgreSQL and selective-table replication. You can get more details on the feature here. So, now that we have this, I’ve been asked on occasion if we are still...
Technical Blog
PostgreSQL 10 is getting close to its first beta release and it will include the initial support for logical replication, which is was written primarily by me and committed by my colleague Peter Eisentraut, and is internally based on the work 2ndQuadrant did on pglogical (even though the user interface is somewhat different). I’d like to share some overview of basics in this blog post. What’s...
Technical Blog
PostgreSQL 9.6 is now out and so is an updated version of pglogical that works with it. For quick guide on how to upgrade the database with pglogical you can check my post which announced 9.6beta support. The main change besides the support for 9.6.x release of PostgreSQL is in the way we handle the output plugin and apply plugin. They have now been merged into single code base and single package...
Technical Blog
We have made pglogical 1.1 packages available for PostgreSQL 9.6beta1 for both rpm and deb based distributions. They are available for install from our standard pglogical package repository. You may ask why do we release packages for beta version of Postgres? Well, one of the reasons is that you can use pglogical to replicate your existing PostgreSQL 9.5 or 9.4 database to the 9.6beta1 in real...
Technical Blog
The new feature version of pglogical is now available. The new release brings support for sequence replication, manually configured parallel subscriptions, replica triggers, numerous usability improvements and bug fixes. Let’s look into the changes in more detail. Sequences support As the title of this post says, pglogical now supports sequence replication. While I am sure this is good news for...
Technical Blog
In last couple of months I’ve been working on online upgrade for very large databases as part of the AXLE project and I would like to share my thoughts on the topic and what progress we have made recently. Before joining 2ndQuadrant I used to work in Skype where the business would not allow a maintenance window for our databases. This meant no downtime was allowed for deployments, upgrades, etc...