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:
https://kafka.apache.org/blog/2026/01/14/apache-kafka-4.2.0-release-announcement/

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 https://kafka.apache.org/blog#apache_kafka_411_release_announcement

Thanks to 32 contributors and Lianet Magrans as our RM.

"Congratulations!

Your talk, The Curious Case of Streaming Windows, has been accepted for Current 2025 taking place in-person October 29-30th, 2025 in New Orleans, Louisiana."

Looking forward to this! #Current2025 #ApacheKafka #KafkaStreams

Did you know that Confluent has a monthly developer newsletter?

Happy that I am featured in this month’s “Know Your Developer” section. And yes, of course we talk about #KafkaStreams.

Check it out and subscribe!

https://developer.confluent.io/newsletter/major-flink-sql-workspaces-enhancements-released/

Atlassian introduced Lithium - an in-house #ETL platform designed to meet the requirements of dynamic data movement.

Lithium simplifies cloud migrations, scheduled backups, and in-flight data validations with ephemeral pipelines and tenant-level isolation - ensuring efficiency, scalability & cost savings.

📢 InfoQ spoke with Niraj Mishra, Principal Engineer at Atlassian, about Lithium’s implementation and future.

🔗 Read more here: https://bit.ly/415RPYZ

#DataPipelines #KafkaStreams #ApacheKafka #ApacheFlink #SoftwareArchitecture

#InfoQ

Another holiday 🎁 delivered. We completed https://issues.apache.org/jira/browse/KAFKA-16332 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.

I want to express my personal "thank you" to everyone involved!

- https://github.com/abhi-ksolves
- https://github.com/abhishekgiri23
- https://github.com/ardada2468

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Как в Sidec благодаря exactly-once сократили потребление ресурсов без потери производительности

Меня зовут Сергей Гребенюк, я лидер разработки Sidec ( Росреестр ). Расскажу, как решили задачу объединения двух топиков с соотношением один ко многим и почему не устроило решение на Kafka-streams ( kafka docs ) и RocksDB ( github ). А также о том, как, опираясь на гарантии доставки exactly-once (EOS) ( confluent docs ), смогли снизить требования к ресурсам в несколько раз. На иллюстрации показаны два подхода к объединению топиков: с persistent cache и in-memory cache. Мы перейдём от первой схемы ко второй.

https://habr.com/ru/companies/sberbank/articles/863688/

#Sidec #потребление_ресурсов #kafkastreams #kafkaconnect

🚀 Kafka Streams In Action - Baue deine erste Streaming-App 🚀

In seinem Vortrag auf der #BaselOne24 zeigt Thomas Müller, wie man mit der hashtag#Kafka-Streaming-API eine leistungsfähige Streaming-Anwendung erstellen kann – und das auf einfache Weise! 👨‍💻
https://lnkd.in/ggjmzerN

Wir freuen uns auf dich! 🙌

#KafkaStreams #ApacheKafka #Streaming #SoftwareDevelopment