Apache Kafka

Apache Kafka 4.3.1 was released. It contains a critical memory-leak bug fix for @kafkastreams Thanks to our RM @bbejeck for the quick turnaround on this one! apache.org/dist/kafka/4.3…

We are also excited about the 4.2.1 bug-fix release. It contains a couple of critical fixes! Thanks to all contributors and our RM @FrankYangTW. For details checkout the release notes: apache.org/dist/kafka/4.2…

We are happy to announce the Apache Kafka 4.3.0 release! It includes 25 KIPs and over 600 commits from 147 contributors (and 3 AIs). Unfortunately, also a memory leak on @kafkastreams so please wait for 4.3.1 if you are a Kafka Streams user. kafka.apache.org/blog/2026/05/2…

Happy Birthday #KafkaStreams 🎉 10 years ago, Apache Kafka 0.10.0.0 was released. It was the inaugural release of @kafkastreams — What a journey! Thanks to almost 500 contributors! It would not have been possible without each and everyone of you!

Congrats to @kirk_true for becoming our latest committer!

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 @FrankYangTW, @iamviktorwatts, and Andrew Schofield.

We are happy to announce that @iamviktorwatts accepted our invitation to join the PMC. Congratulations Viktor!

We are happy to announce that Andrew Schofield accepted our invitation to join the PMC. Congratulations Andrew!

We are happy to announce that @christo_lolov accepted our invitation to join the PMC. Congratulations Christo!

We are happy to announce that @kamalcph0 accepted our invitation to join the PMC. Congratulations Kamal!

We are happy to announce that Lianet Magrans accepted our invitation to join the PMC. Congratulations Lianet!

@waqasdaha @christo_lolov Fixed

@apachekafka @christo_lolov URL is not working.

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/2026/01/1…

Uh, changed my mind…

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.

Early holiday gift arrived! We are live with our new webpage! Same content. Modern look and modern backend. It’s a huge simplification for maintaining and contributing to the docs. Kudos and thanks to Harish Vishwanath for leading this effort, and David Arthur for shepherding!

Another milestone: KAFKA-20000 was filed today!

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 #apache_kafka_411_release_announcement" target="_blank" rel="nofollow noopener">kafka.apache.org/blog#apache_ka… Thanks to 32 contributors and Lianet Magrans as our RM.

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: #apache_kafka_401_release_announcement" target="_blank" rel="nofollow noopener">kafka.apache.org/blog#apache_ka…

🚨Kafka Streams 4.1.0 contains a memory leak regression bug: issues.apache.org/jira/browse/KA… Be careful upgrading, or wait for 4.1.1 bug-fix release. We plan to get it out quickly.