Hot Standby Archives - 2ndQuadrant

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PostgreSQL 13: Don’t let slots kill your primary

July 30, 2020/0 Comments/in 2ndQuadrant, Alvaro's PlanetPostgreSQL, PostgreSQL 13 /by Álvaro Herrera

One of the interesting new features in PostgreSQL for some time now is the ability to control removal of WAL files using replication slots. The dark side is that replication slots can cause disks to fill up with old WAL, killing the main production server. In this article I explain PostgreSQL replication slots, and how a new feature in PostgreSQL 13 helps prevent this problem.

PG Phriday: It’s the End of the World as We Know it (and Postgres is Fine)

July 3, 2020/0 Comments/in Shaun's PlanetPostgreSQL /by Shaun Thomas

On June 17th, I gave a presentation on Postgres Monitoring to the Chicago Postgres User Group. Since MeetUp doesn’t allow uploading slides, I figured I’d convert my presentation into a more comprehensive writeup. Enjoy! Why Monitor So, what are the finer points of Disaster Mitigation? Let’s start with a few questions: What broke? When did […]

When autovacuum does not vacuum

April 19, 2017/8 Comments/in 2ndQuadrant, PostgreSQL, Tomas' PlanetPostgreSQL /by Tomas Vondra

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. […]

Evolution of Fault Tolerance in PostgreSQL: Synchronous Commit

August 17, 2016/2 Comments/in 2ndQuadrant, Featured, Gulcin's PlanetPostgreSQL, PostgreSQL /by Gulcin Yildirim

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 a series of blog posts. This is the fourth post of the series and we’ll talk about synchronous commit and its effects on fault tolerance and dependability of PostgreSQL. […]

Evolution of Fault Tolerance in PostgreSQL: Time Travel

July 21, 2016/0 Comments/in 2ndQuadrant, Featured, Gulcin's PlanetPostgreSQL, PostgreSQL /by Gulcin Yildirim

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 a series of blog posts. This is the third post of the series and we’ll talk about timeline issues and their effects on fault tolerance and dependability of PostgreSQL. […]

Evolution of Fault Tolerance in PostgreSQL: Replication Phase

July 11, 2016/0 Comments/in 2ndQuadrant, Featured, Gulcin's PlanetPostgreSQL, PostgreSQL /by Gulcin Yildirim

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 a series of blog posts. This is the second post of the series and we’ll talk about replication and its importance on fault tolerance and dependability of PostgreSQL. If […]

Waiting for Barman 1.6.1

May 10, 2016/0 Comments/in Gabriele's PlanetPostgreSQL /by Gabriele Bartolini

The upcoming version 1.6.1 of Barman will introduce a few interesting new features which consolidate its central role in business continuity installations of PostgreSQL databases. Discover why.

Getting WAL files from Barman with ‘get-wal’

October 6, 2015/1 Comment/in Barman, Gabriele's PlanetPostgreSQL /by Gabriele Bartolini

Barman 1.5.0 enhances the robustness and business continuity capabilities of PostgreSQL clusters, integrating the get-wal command with any standby server’s restore_command. In this blog article I will go over the reasons behind this feature and briefly describe it. One of the initial ideas we had in mind when conceiving Barman was to make it, one […]

Trade-offs in Hot Standby Deployments

February 24, 2010/0 Comments/in Greg's PlanetPostgreSQL, PostgreSQL /by 2ndQuadrant Press

The new Hot Standby feature in the upcoming PostgreSQL 9.0 allows running queries against standby nodes that previously did nothing but execute a recovery process. Two common expectations I’ve heard from users anticipating this feature is that it will allow either distributing short queries across both nodes, or allow running long reports against the standby […]

Hot Standby User Group (online) – 13 Jan at 1600UTC

January 11, 2010/0 Comments/in International News, United Kingdom News, United States News /by Gabriele Bartolini

Come on-line and discuss the features set of Hot Standby for PostgreSQL 8.5. Meeting is for anybody planning to actively use the Hot Standby in the next main release of PostgreSQL. Major focus is on providing user feedback direct to developers to guide the final weeks of development before we go into Beta.

Read 2ndQuadrant’s response to the COVID – 19 emergency here