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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

PostgreSQL: Indexes and foreign keys

by Hans-Jürgen Schönig | 07.2017
Recently we have received a couple of PostgreSQL support calls, which were related to bad performance on various deployments. In […]

Why favor PostgreSQL over MariaDB / MySQL

by Hans-Jürgen Schönig | 04.2017
For many years, MySQL and PostgreSQL were competing databases, which addressed slightly different audiences. In my judgement (which is of […]

Composite types in PostgreSQL: (func()).* - Hidden performance issues

by Hans-Jürgen Schönig | 04.2017
PostgreSQL support cases are coming in on a regular basis. This week an especially noteworthy one reached our desks here […]

Removing duplicate rows in PostgreSQL

by Hans-Jürgen Schönig | 04.2017
After some time of absence due to a high workload I finally got around to write more on an issue, […]

Experimenting with scaling and full parallelism in PostgreSQL

by Hans-Jürgen Schönig | 02.2017
A lot has been said and written about scaling PostgreSQL to many cores and subsequently to many machines. Running PostgreSQL […]

Checkpoint distance and amount of WAL

by Hans-Jürgen Schönig | 01.2017
UPDATED July 2024: Most people who use PostgreSQL database systems are aware of this fact: The database engine must send […]

Detecting unstable execution times in PostgreSQL

by Hans-Jürgen Schönig | 12.2016
Do you have queries with unstable execution times? You have a query which is sometimes slow and sometimes just lightning […]

pg_basebackup: Creating self-sufficient backups

by Hans-Jürgen Schönig | 12.2016
UPDATED September 2023: If you use transaction log shipping (or Point-In-Time-Recovery) in PostgreSQL to keep your data safe, you surely […]

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
“Our database is slow. What if we just buy more disks? Is it going to fix things?”. I think every […]
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