CHAR (16) – Another conference on the horizon but with a focus on business

The PostgreSQL user community is becoming spoilt with a choice of excellent events organized by both local user groups and commercial organizations supporting the Postgre ...

More ‘POWER’ for PostgreSQL

Now Available! Debian and Ubuntu packages for Power Architecture. The official announcement was published last Friday, September 30, 2016: the PostgreSQL repository for D ...

Committed to the PostgreSQL Community, 2ndQuadrant Contributes to 9.6

The latest version of PostgreSQL 9.6 is planned to be released later today, bringing with it some much anticipated features and updates. As the most advanced open source ...

Back to the Future Pt. 2: How to use pg_rewind with PostgreSQL 9.5

In the previous blog article we have seen how pg_rewind works with a simple HA cluster, composed of a master node replicating to a standby. In this context, an eventual s ...

The Best Barman Ever

This is my (very) biased opinion, but I am ready to bet that once you try Barman 2.0 you’ll agree with me. Version 2.0 takes Barman to a new level, thanks to full ...

Back to the Future Pt. 1: Introduction to pg_rewind

Since PostgreSQL 9.5, pg_rewind has been able to make a former master follow up a promoted standby although, in the meantime, it proceeded with its own timeline. Consider ...

Evolution of Fault Tolerance in PostgreSQL: Synchronous Commit

PostgreSQL is an awesome project and it evolves at an amazing rate. We’ll focus on evolution of fault tolerance capabilities in PostgreSQL throughout its versions with ...

PostgreSQL vs. Linux kernel versions

I’ve published multiple benchmarks comparing different PostgreSQL versions, as for example the performance archaeology talk (evaluating PostgreSQL 7.4 up to 9.4), a ...

Evolution of Fault Tolerance in PostgreSQL: Time Travel

PostgreSQL is an awesome project and it evolves at an amazing rate. We’ll focus on evolution of fault tolerance capabilities in PostgreSQL throughout its versions with ...

Speed up getting WAL files from Barman

Starting from Barman 1.6.1, PostgreSQL standby servers can rely on an “infinite” basin of WAL files and finally pre-fetch batches of WAL files in parallel fro ...

In the defense of sar (and how to configure it)

Let me discuss a topic that is not inherently PostgreSQL specific, but that I regularly run into while investigating issues on customer systems, evaluating “supportability” of those systems, etc. It’s the importance of having a monitoring solution for system metrics, configuring it reasonably, and why sar is still by far my favorite tool (at least…

PostgreSQL 10 identity columns explained

For PostgreSQL 10, I have worked on a feature called “identity columns”. Depesz already wrote a blog post about it and showed that it works pretty much like serial columns: CREATE TABLE test_old ( id serial PRIMARY KEY, payload text ); INSERT INTO test_old (payload) VALUES (‘a’), (‘b’), (‘c’) RETURNING *; and CREATE TABLE test_new…

“Now is Better Than Never” – Why I decided to attend PyCon8…

…and why I’m glad I did. It’s not all technical… Who knew?! Last year, Pycon7 was held right about the time I joined 2ndQuadrant. Seeing as I was new to the technology AND the Italian language (note: there was an English track), I opted out of attending. Well, after attending Pycon8, I can say that…

BuildFarm client release 4.19

I have released version 4.19 of the PostgreSQL Buildfarm client. It can be downloaded from https://buildfarm.postgresql.org/downloads/releases/build-farm-4_19.tgz Apart from some minor bug fixes, the following changes are made: Include the script’s path in @INC. That means you can usually run the script from anywhere rather than just its own directory. Set TZ after “make check” is…

When autovacuum does not vacuum

A few weeks ago I explained basics of autovacuum tuning. At the end of that post I promised to look into problems with vacuuming soon. Well, it took a bit longer than I planned, but here we go. To quickly recap, autovacuum is a background process cleaning up dead rows, e.g. old deleted row versions….

Using the PostgreSQL TAP framework in extensions

Support for using the TAP protocol to run extended regression tests was added to PostgreSQL back in 9.4 with the adoption of Perl’s prove tool and Test::More to test initdb, pg_basebackup, etc. Since then the TAP-based tests have been greatly expanded, particularly with the advent of the src/test/recovery tests and the PostgresNode module in PostgreSQL…

Traceable commit for PostgreSQL 10

PostgreSQL 10 now supports finding out the status of a recent transaction for recovery after network connection loss or crash.

2ndQuadrant – Not the Gartner Magic Quadrant

It’s still appropriate though. Because that is what we are – thought leaders in open source PostgreSQL. But that’s not what I am here to talk about. The name “2ndQuadrant” comes from “The Seven Habits of Highly Effective People” by Stephen Covey, specifically Habit 3 “Put First Things First”, p.151. It refers to the classification…

PgDay Paris 2017

Great conference! Paris is a great venue for travellers across Europe and worldwide. PgDay Paris 2017 was held in English and attracted a wide audience from many other countries: UK, NL, CH, BE, US, SE – and that was just the people I spoke to. Je suis desolee ne parler ou ecrit pas en francais….

PGConf India 2017 – An Event to Remember

Yet another edition of PGConf India came to conclusion in early March. You may have noticed the change from PGDay to PGConf, which signals a much larger gathering of PostgreSQL enthusiasts, now and in future. What started as a small meet-up of like minded people 4 years back, has now grown into a 2-day conference…

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