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Kafka Streams

@kafkastreams.bsky.social
131 followers 26 following 35 posts

The official Apache Kafka Streams account. Run by the Apache Kafka PMC. Long live the otter.

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Kafka Streams @kafkastreams.bsky.social · 24/08/2026
We are happy to announce our latest committer Jiunn-Yang (Ken) Huang! Please join us to congratulate him!
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Kafka Streams @kafkastreams.bsky.social · 25/06/2026
Apache Kafka 4.3.1 was released. It contains a critical memory-leak bug fix for #KafkaStreams. Thanks to our RM Bill Bejeck for the quick turnaround on this downloads.apache.org/kafka/4.3.1/...
downloads.apache.org
Below is a summary of the JIRA issues addressed in the 4.3.1 release of Kafka. For full documentation of the release, a guide to get started, and information about the project, see the Kafka project site.
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Kafka Streams @kafkastreams.bsky.social · 04/06/2026
Apache Kafka 4.2.1 landed. It contains a critical broker side bug-fix for the new “streams” group. If you did hold back so far, it’s time to upgrade and adopt now! downloads.apache.org/kafka/4.2.1/...
downloads.apache.org
Below is a summary of the JIRA issues addressed in the 4.2.1 release of Kafka. For full documentation of the release, a guide to get started, and information about the project, see the Kafka project site.
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Kafka Streams @kafkastreams.bsky.social · 17/04/2026
lukastymo.com/posts/028-st...
lukastymo.com
Stateful Kafka Streams Processors: Reducing Rebalancing - Lessons Learned
Stateful Kafka Streams on Kubernetes need configuration to stay stable during rolling updates without causing lag. If your processor must be fast, runs on few partitions, and short lag matters, the de...
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Kafka Streams @kafkastreams.bsky.social · 30/03/2026
Congrats to Kirk True for becoming our latest committer!
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Kafka Streams @kafkastreams.bsky.social · 20/03/2026
While we are slowly heading into 4.3.0 release, we have some other good news for you: Over the last weeks, we released 3.9.2, 4.0.2, and 4.1.2 bug-fix releases! Thanks for all 57/44/39 contributors and our RMs PoAn Yang, Viktor Somogyi-Vass, and Andrew Schofield.
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Kafka Streams @kafkastreams.bsky.social · 23/02/2026
We are happy to announce that Viktor Somogyi-Vass accepted our invitation to join the PMC. Congratulations Viktor!
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Kafka Streams @kafkastreams.bsky.social · 23/02/2026
We are happy to announce that Andrew Schofield accepted our invitation to join the PMC. Congratulations Andrew!
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Kafka Streams @kafkastreams.bsky.social · 23/02/2026
We are happy to announce that Christo Lolov accepted our invitation to join the PMC. Congratulations Christo!
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Kafka Streams @kafkastreams.bsky.social · 22/02/2026
We are happy to announce that Kamal Chandraprakash accepted our invitation to join the PMC. Congratulations Kamal!
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Kafka Streams @kafkastreams.bsky.social · 21/02/2026
We are happy to announce that Lianet Magrans accepted our invitation to join the PMC. Congratulations Lianet!
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Kafka Streams @kafkastreams.bsky.social · 21/02/2026
The recent 4.2 release is one of the largest milestones for Kafka Streams so far. The new “streams” groups introduce Kafka Streams specific RPCs into the protocol, making Kafka Streams more than just a wrapper around consumer/producer clients, and a first class citizen. \1
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Kafka Streams @kafkastreams.bsky.social · 17/02/2026
We are happy to announce Apache Kafka 4.2.0! Highlights are: Queues for Kafka and the new #KafkaStreams "streams" groups. Thanks to all the 155 contributors and our RM Christo Lolov. More details on the web page: kafka.apache.org/blog/2026/01...
kafka.apache.org
Apache Kafka 4.2.0 Release Announcement
We are proud to announce the release of Apache Kafka® 4.2. This release contains many new features and improvements. This blog post will highlight some of the more prominent ones. For a full list of c...
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Kafka Streams @kafkastreams.bsky.social · 14/02/2026
Great stuff about Kafka Streams! Check it out! medium.com/@souquieres....
medium.com
Souquieres Adam – Medium
Read writing from Souquieres Adam on Medium. Writing about production streaming and data systems. Focus on trade-offs, not trends. Experience-based, not promotional.
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Kafka Streams @kafkastreams.bsky.social · 13/01/2026
There is a new KIP-1244 proposing to deprecate the Kafka Streams Scala API, and remove it with the next major release. Please join the discussion on the dev mailing list if this concerns you.
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Yennick Trevels @digitalbuff.dev · 02/12/2025
🚀 I've built a new interactive simulation of #Kafka Streams, showcasing state stores! See state stores being restored, switch between RocksDB & in-memory state store behavior,restart tasks. Great for understanding or explaining Kafka Streams! Try it here: kafkastreamsfieldguide.com/tools/state-...
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Kafka Streams @kafkastreams.bsky.social · 14/11/2025
We are happy to share that the Apache Kafka 4.1.1 bug-fix release is now available! It contains a critical memory-leak fix for #KafkaStreams and many other fixes. For details see kafka.apache.org/blog#apache_... Thanks to 32 contributors and Lianet Magrans as our RM.
kafka.apache.org
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
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Kafka Streams @kafkastreams.bsky.social · 11/11/2025
Sub-topologies and co-partitioning are imported concepts. Nice blog post from Expedia: medium.com/expedia-grou...
medium.com
Colocating Input Partitions with Kafka Streams When Consuming Multiple Topics: Sub-Topology Matters!
Understanding how sub-topology design influences partition co-location
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Kafka Streams @kafkastreams.bsky.social · 13/10/2025
We are excited to announce the Apache Kafka 4.0.1 bug-fix release, containing over 40 fixes! Thanks to 53 contributors and your RM Christo Lolov. For more details, checkout the announcement: kafka.apache.org/blog#apache_...
kafka.apache.org
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
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Kafka Streams @kafkastreams.bsky.social · 06/10/2025
🚨Kafka Streams 4.1.0 contains a memory leak regression bug: issues.apache.org/jira/browse/... Be careful upgrading, or wait for 4.1.1 bug-fix release. We plan to get it out quickly.
issues.apache.org
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Kafka Streams @kafkastreams.bsky.social · 30/09/2025
Any KIP-1071 experience out there? Asking for a friend.
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Apache Software Foundation (The ASF) @apache.org · 11/09/2025
🚨 Breaking News from Community Over Code 🚨 Introducing The ASF’s New Logo buff.ly/DzgT82w #CommunityOverCode #opensource
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Kafka Streams @kafkastreams.bsky.social · 04/09/2025
Apache Kafka 4.1.0 was release! Most exciting, the new “streams” rebalance protocol is available as early access. We are happy to announce the Apache Kafka 4.1.0 release! Please try it out, and let us know how it goes! kafka.apache.org/blog#apache_...
kafka.apache.org
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
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Kafka Streams @kafkastreams.bsky.social · 29/07/2025
While we are waiting for Apache Kafka 4.1.0 release, the development does not stop. We just completed KIP-1034 (cwiki.apache.org/confluence/d...) which adds a DLQ feature to Kafka Streams. Very exciting!
cwiki.apache.org
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Tom Cooper @tomcooper.dev · 20/05/2025
Next at #Current25 a panel discussion on the past, present and future of @kafkastreams.bsky.social. I love the background...the likeness is uncanny...
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Reposted by Kafka Streams
Apache Software Foundation (The ASF) @apache.org · 10/06/2025
Apache Kafka 3.9.1 is now available for download: buff.ly/5ONjJgB This bug-fix release has several fixes, and most importantly, it adds Java 23 support. #opensource
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Kafka Streams @kafkastreams.bsky.social · 05/04/2025
Apache Kafka 4.0 was released recently. We got a couple of a cool KIPs shipped. KIP-1065: cwiki.apache.org/confluence/p... The ProductionExceptionHandler becomes more flexible. It’s now also called for retriable errors. This allows you to break (previously infinite) retry loops. \1
cwiki.apache.org
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Sophie Blee-Goldman @ableegoldman.bsky.social · 11/03/2025
Next up in the Kafka Streams 101 series: performance optimization! Admittedly this one goes way beyond just the "101" level, with general tips to incredibly specific optimization techniques. Check it out to get a handle on your application's performance: bit.ly/43zXoQM
bit.ly
Kafka Streams 101: Optimizing your apps for maximum performance
Learn the concepts, configs, and application design strategies to get your Kafka Streams apps running as optimally as possible.
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Neil Buesing @nbuesing.bsky.social · 05/03/2025
@intellijidea.com's IDE has a great Apache Kafka plugin. This is a @kafkastreams.bsky.social's session window changelog topic -- maybe I can figure out how to get support natively for Kafka Stream windowing keys.
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Kafka Streams @kafkastreams.bsky.social · 26/02/2025
Writing and a running a Kafka Streams app can be trickier than you'd think! We have some basic examples in the repo but they don't cover everything. Glad to have more material focused on helping new people get into Kafka Streams!
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Reposted by Kafka Streams
Sophie Blee-Goldman @ableegoldman.bsky.social · 18/02/2025
We're keeping the ball rolling on the Kafka Streams 101 series with yet another blog post! This time the focus is on configuration, and breaking down the most important configs to focus on for various needs (such as correctness, resiliency, etc) Check it out here: www.responsive.dev/blog/importa...
responsive.dev
Kafka Streams 101: The Most Important Configs
Learn which configurations are most critical for a reliable and efficient deployment
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Sophie Blee-Goldman @ableegoldman.bsky.social · 13/02/2025
The 2025 blog post series has begun and we're kicking things off with the "official" Kafka Streams upgrade-guide -- check it out for best practices when setting up a new app, rules for safe vs unsafe upgrades, and tips for making the process go smoothly: www.responsive.dev/blog/topolog...
responsive.dev
Kafka Streams 101: Topology Upgrades
A Kafka Streams 101 lesson to learn how to identify unsafe changes to a topology and the techniques to mitigate them
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Matthias J. Sax 🦦 @mjsax.bsky.social · 07/02/2025
#StreamProcessing with @kafkastreams.bsky.social
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Matthias J. Sax 🦦 @mjsax.bsky.social · 20/12/2024
Another holiday 🎁 delivered. We completed issues.apache.org/jira/browse/... to remove all deprecated #KafkaStreams APIs for the upcoming #ApacheKafka 4.0 release! It was an outstanding community effort and huge win! We merged 36 PRs from 14 different contributors, removing 13K LOC. \1
issues.apache.org
[KAFKA-16332] Remove Deprecated builder methods for Time/Session/Join/SlidingWindows - ASF JIRA
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Kafka Streams @kafkastreams.bsky.social · 20/12/2024
Kafka Streams has officially come to Bluesky! Follow this account for updates on everything Kafka Streams and keep up to date with new features, bug fixes, and upcoming KIPs. Long live the otter!
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