Gunnar Morling

Gunnar is an open-source enthusiast at heart, currently working on Apache Flink-based stream processing. In his prior role as a software engineer at Red Hat, he led the Debezium project, a distributed platform for change data capture. He is a Java Champion and has founded multiple open source projects such as JfrUnit, kcctl, and MapStruct.

Denormalizing Change Event Streams for Document Stores

Denormalizing Change Event Streams for Document Stores

In this blog post I’m going to show you how to set up such a real-time streaming pipeline between MySQL as a system of record and OpenSearch as a derived data store, enabling use cases such as full-text search and dashboarding.

Checkpoint Chronicle - March 2024

Checkpoint Chronicle - April 2024

Welcome to the Checkpoint Chronicle, a roundup for April 2024 of interesting stuff in the data and streaming space. Your hosts and esteemed curators of said content are Gunnar Morling and Robin Moffatt.

A plushy acorn in front of a Decodable conference booth

Meet the Decodable Crew At Kafka Summit London 2024!

Just a few more days until Kafka Summit London 2024! Time for a quick glimpse at what we've planned for this key event in the data streaming space.

A Taxonomy Of Data Change Events

A Taxonomy Of Data Change Events

What is contained within a change event, really? What kinds of change events exist, and when should you use which? Read on to learn more about CDC and the answers to these questions.

Checkpoint Chronicle - January 2024

January 24, 2024

Checkpoint Chronicle - January 2024

Welcome to the Checkpoint Chronicle, a monthly roundup of interesting stuff in the data and streaming space. Your hosts and esteemed curators of said content are Gunnar Morling and Robin Moffatt.

Logical Replication From Postgres 16 Stand-By Servers

December 19, 2023

Logical Replication From Postgres 16 Stand-By Servers

For users of Change Data Capture (CDC), one of the most exciting features in Postgres version 16 is the support for logical replication from stand-by servers. This post explores why and how to use this functionality.

Logical Replication From Postgres 16 Stand-By Servers

December 19, 2023

Logical Replication From Postgres 16 Stand-By Servers—Debezium and Failover Slots

Welcome back to this two-part series about logical replication from stand-by servers with Postgres 16. Gunnar Morling explores how to use this feature together with Debezium for change data capture and how to manage replication slots in fail-over scenarios.

Getting Started With PyFlink on Kubernetes

December 7, 2023

Getting Started With PyFlink on Kubernetes

A quick run-through of the required steps for getting started with PyFlink on Kubernetes as of Apache Flink 1.18.

“Change Data Capture Breaks Encapsulation”. Does it, though? 🤔

November 21, 2023

“Change Data Capture Breaks Encapsulation”. Does it, though?

When—and when not—CDC can break encapsulation, whether it matters, and strategies for avoiding these problems when it does happen.

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