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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

Debugging PostgreSQL more easily

by Hans-Jürgen Schönig | 03.2025
PostgreSQL powers many applications. In this blog posting you can read more about how to debug database applications effectively.

PostgreSQL: 1 trillion rows in Citus

by Hans-Jürgen Schönig | 03.2025
"PostgreSQL scales" - what does it mean? Find out what 1 trillion rows in Citus is all about in this blog post.

PostgreSQL: To normalize or not to normalize?

by Hans-Jürgen Schönig | 03.2025
In this blog posting you can read more about one of the fundamental principles in the realm of databases: "Normalization".

Logon trigger in PostgreSQL

by Hans-Jürgen Schönig | 01.2025
This post explains how this works and how such a LOGON/LOGIN trigger can be implemented and used in real life.

# GROUP BY: Fixing optimizer estimates

by Hans-Jürgen Schönig | 01.2025
The more columns your GROUP BY statement contains, the more likely it is that optimizer overestimates the row count. Read more how to handle.

Deploying the Zalando Kubernetes operator

by Hans-Jürgen Schönig | 11.2024
Learn how to deploy the Zalando operator for PostgreSQL and ensure consistency and compliance.

Why "SELECT * FROM table" is NOT a read

by Hans-Jürgen Schönig | 09.2024
People tend to think that a SELECT-operation is always a read. This might look obvious and make sense but does it actually hold true?

VACUUM: Managing and detecting bloat

by Hans-Jürgen Schönig | 09.2024
We will explore the concept of VACUUM in PostgreSQL, its importance, and best practices for implementing effective vacuuming strategies.

Enhanced security: Logging PostgreSQL connections

by Hans-Jürgen Schönig | 08.2024
Logging connections in PostgreSQL can be incredibly valuable for monitoring and troubleshooting purposes. However,  that’s not all: auditing is also […]

Speeding up index creation in PostgreSQL

by Hans-Jürgen Schönig | 07.2024
In this blog we are talking about indexes. Speeding up index creation in PostgreSQL is one of the main topic.
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