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Hans-Jürgen Schönig

Founder & CEO of CYBERTEC
Hans-Jürgen Schönig has worked with PostgreSQL since the 90's. He is the CEO and technical lead of CYBERTEC PostgreSQL International, a market leader in the field. He's served countless customers around the globe since the year 2000. He is also the author of the well-received "Mastering PostgreSQL" book series, as well as several other books about PostgreSQL replication and administration.

Articles by Hans-Jürgen Schönig

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.

Detecting unstable execution times in PostgreSQL

by Hans-Jürgen Schönig | 12.2016
How to tune a query which is sometimes slow and sometimes fast. The question is usually: How come it has an unstable execution time?

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.

Parallel queries and SERIALIZABLE transactions

by Hans-Jürgen Schönig | 11.2016
In version 9.6 PostgreSQL introduced parallel queries. The ability to use more than just one CPU core per query is […]

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.

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.

paginators - The story about voluntary pain in PostgreSQL

by Hans-Jürgen Schönig | 08.2016
If you want to display millions of entries on your website, you definitely turn to paginators. Here's how you do it right using PostgreSQL.

Inheritance - One more reason to love PostgreSQL

by Hans-Jürgen Schönig | 07.2016
The PostgreSQL feature "inheritance" works like a charm. You ask why? Well, here are the details we really like about it.

PostgreSQL exclusion constraints: Beyond UNIQUE

by Hans-Jürgen Schönig | 07.2016
UPDATED AUGUST 2023: A couple of years ago, PostgreSQL introduced so called “exclusion constraints”, which are defined with the EXCLUDE […]

PostgreSQL instance-level encryption

by Hans-Jürgen Schönig | 06.2016
Business critical applications require full encryption to match legal requirements. We published a patch to provide full database encryption.
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