Steffen's Blog

Field Engineer @ Materialize

Navigating Private Network Connectivity Options for Kafka Clusters

There are various strategies for securely connecting to Kafka clusters between different networks or over the public internet. Many cloud providers even offer endpoints that privately route traffic between networks and are not exposed to the internet. But, depending on your network setup and how you are running Kafka, these options … might not be an option! In this session, we’ll discuss how you can use SSH bastions or a self managed PrivateLink endpoint to establish connectivity to your Kafka clusters without exposing brokers directly to the internet.

A Beginner’s Guide to Kafka Performance in Cloud Environments

Over time, deploying and running Kafka became easier and easier. Today you can choose amongst a large ecosystem of different managed offerings or just deploy to Kubernetes directly. But, although you have plenty of options to optimize your Kafka configuration and choose infrastructure that matches your use case and budget, it’s not always easy to tell how these choices affect overall cluster performance. In this session, we’ll take a look at Kafka performance from an infrastructure perspective.

Everything you need to know to be a Materialize power-user

This post is also available on the Materialize blog. Materialize is a distributed SQL database built on streaming internals. With it, you can use the SQL you are already familiar with to build powerful stream processing capabilities. But as with any abstraction, sometimes the underlying implementation details leak through the abstraction. Queries that look simple and innocent when you are formulating them in SQL can sometimes require more resources than expected when evaluated incrementally against a continuous stream of arriving updates.

Leaving Amazon

After more than 7.5 years my time at AWS came to a close at the end of 2022. It’s been an incredible journey to learn and grow professionally. I’m still surprised how much trust and support I’ve received over the years to focus on things I found important and impactful. Just last year the work I’ve started to improve the Apache Flink connectors system was contributed back to the open source project, not only resulting in several blog posts and a session at Flink Forward, but also getting early adoption that lead to support of new destinations that now integrate with Apache Flink.

Making it Easier to Build Connectors with Apache Flink: Introducing the Async Sink

Apache Flink is a popular open source framework for stateful computations over data streams. It allows you to formulate queries that are continuously evaluated in near real time against an incoming stream of events. To persist derived insights from these queries in downstream systems, Apache Flink comes with a rich connector ecosystem that supports a wide range of sources and destinations. However, the existing connectors may not always be enough to support all conceivable use cases.