Tag: tuning

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PostgreSQL hash index performance

by Laurenz Albe | 12.2023
  Among the many index types in PostgreSQL, the hash index is the most widely ignored. This came home to […]

pg_stat_io and PostgreSQL 16 performance

by Hans-Jürgen Schönig | 10.2023
Learn about pg_stat_io's debugging power: PostgreSQL 16 blesses users around the world with many features which ensure an even better […]

PostgreSQL: What is a checkpoint?

by Hans-Jürgen Schönig | 02.2021
Checkpoints are a core concept in PostgreSQL. However, many people don’t know what they actually are, nor do they understand […]

Insert-only data modelling to smooth peaks on slow disks

by CYBERTEC Guest | 11.2020
A few years ago, I wrote a short post on a similar topic; since then, I’ve often seen that the […]

HOT updates in PostgreSQL for better performance

by Laurenz Albe | 09.2020
UPDATED blog article on 09.01.2023 HOT updates are not a new feature. They were introduced by commit 282d2a03dd in 2007 […]

Tuning max_connections in PostgreSQL

by Laurenz Albe | 04.2020
  (Updated 2023-02-22) In my daily work, I see many databases with a bad setting for max_connections. There is little […]

Speeding up GROUP BY in PostgreSQL

by Hans-Jürgen Schönig | 03.2019
In SQL the GROUP BY clause groups records into summary rows and turns large amounts of data into a smaller […]

Foreign data wrapper for PostgreSQL: Performance Tuning

by Hans-Jürgen Schönig | 03.2019
Foreign data wrappers are one of the most widely used feature in PostgreSQL. People simply like foreign data wrappers and […]

Sort Performance in PostgreSQL

by Hans-Jürgen Schönig | 08.2018
Sorting is a very important aspect of PostgreSQL performance tuning. However, improving sort performance is often misunderstood or simply overlooked […]

Rules or triggers to log bulk updates?

by Laurenz Albe | 07.2018
  Inspired by my co-worker's recent blog post, I decided to revisit the old question of rules vs. triggers and […]
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