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Checkpoint distance and amount of WAL

by Hans-Jürgen Schönig | 01.2017
Tuning the database server affects the amount of WAL written to disk. Fewer checkpoints are a good idea for bigger databases.

pg_basebackup: Creating self-sufficient backups

by Hans-Jürgen Schönig | 12.2016
UPDATED Aug 2023 How to use pg_basebackup: allows users to create a binary copy of their data, which is the basis for Point-In-Time-Recovery.

writer and wal writer PostgreSQL processes explained

by CYBERTEC Guest | 11.2016
Why are there 2 similarly-named processes called writer and WAL writer? What do they do? Get an explanation.

Exposing PostgreSQL server logs to users via SQL

by CYBERTEC Guest | 11.2016
Easily expose PostgreSQL database logs to users - there’s a pretty neat way for SQL-based access! Here's a quick demo on that.

PostgreSQL instance level encryption

by CYBERTEC Guest | 11.2016
There are a few different ways to implement database encryption - commonly on the operating system, filesystem, file or column […]

Best of PostgreSQL 9.6 for the DBA

by CYBERTEC Guest | 10.2016
Here arethe most interesting and relevant features of PostgreSQL 9.6 for the PostgreSQL DBA - summarized for easy digestion.

The "synchronous_commit" parameter and streaming replication

by CYBERTEC Guest | 09.2016
If you're not yet familiar with the "synchronous_commit" parameter, keep reading. It's one of the most important PostgreSQL parameters.

Will more disks get you better PostgreSQL performance?

by Hans-Jürgen Schönig | 09.2016
Find out whether to buy more hardware to fix performance problems - which are in many cases not caused by bad disk performance.

Walbouncer update - a proxy for selective PostgreSQL physical replication

by CYBERTEC Guest | 08.2016
walbouncer update, now supporting PostgreSQL 14, together with a helper script to build replicas. How-to on the walbouncer set up process.

Exploding runtime: How nested loops can destroy speed

by Hans-Jürgen Schönig | 08.2016
What will happen if the PostgreSQL optimizer underestimates the number of rows involved in nested loops? Includes ways to fix the problem.
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