This was fun! Thanks @gamussa.dev for having me. podcasts.apple.com/us/podcast/c...

A deep dive into Apache Kafka's KRaft protocol developers.redhat.com/articles/202... - Good article from Federico Valeri

Just published my #KafkaStreams news summary! 🔥 Highlights: 4.1.1 bug-fix release, upcoming DLQ feature for Kafka Streams, new Streams UI in Confluent Cloud, Current sessions, & more. kafkastreamsfieldguide.com/articles/kaf... #ApacheKafka

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.

Also congrats to our friends from Michelin. Excited to see their DLQ feature for #KafkaStreams being included in the upcoming #ApacheKafka 4.2.0 release. #Current #DataStreamingAwards current.confluent.io/data-streami...

I've built a Core Insights dashboard for #Kafka Streams! 📊 This Prometheus-based Grafana dashboard brings together the metrics that actually matter. One view to spot issues before they become incidents. #dataengineering kafkastreamsfieldguide.com/articles/kaf...

#KafkaStreams is at the core of Metronome. "There is some talks we've given[...] on what it looks like to run KS at scale." -- "We are storing TBs of state in RocksDB." A very advanced deployment requiring careful engineering. But the library approach shines! Check it out. cnfl.io/3WPoAGE

🚀 Announcing the Kafka Streams Field Guide! I’m writing a book with 8 insights for running Kafka Streams in production. Join the waiting list at kafkastreamsfieldguide.com and get 2 free chapters! #ApacheKafka

Happy to share, that we did release an update to our @kafkastreams.bsky.social UI in #ConfluentCloud. We are now showing more detailed information about instances, threads, running/rebalancing state, and JMX metrics. Check it out and let us know what you think! www.confluent.io/blog/monitor...

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_...

Oh-oh!

Any KIP-1071 experience out there? Asking for a friend.

🚀 Yesterday, we announced that 𝗥𝗲𝘀𝘁𝗮𝘁𝗲 𝗖𝗹𝗼𝘂𝗱 is now publicly available. Today, we’re announcing 𝗥𝗲𝘀𝘁𝗮𝘁𝗲 𝟭.𝟱! This release brings key features for building, controlling and observing your durable agents and workflows.

The #ApacheKafka Java clients and #KafkaStreams engineering team at @confluent.io keeps growing. Very excited to welcome @okaberintaroubeta.bsky.social, Genseric Ghiro, and @nikitashupletsov.bsky.social! We also have one more entry level position in Toronto 🇨🇦 careers.confluent.io/jobs/job/67c...

😢 www.responsive.dev/ks-archive

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_...

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!

The schedule is now available for Community Over Code North America, and early bird registration ends June 28. We hope you'll join the ASF community in Minneapolis Sept 11-14! buff.ly/4b8kciW #CommunityOverCode #opensource

Insane amount of SlateDB work going on: - snapshot reads - split/merge DBs (zero copy) - deterministic simulation testing And someone just pushed Python bindings in a PR! 🤯

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

Next at #Current25 a panel discussion on the past, present and future of @kafkastreams.bsky.social. I love the background...the likeness is uncanny...

New blog post alert! My colleague Alieh Saeedi digs into the guts of manual consumer offset commits, and the improvements of KIP-1094 (AK 4.0) about it. Outstanding work! Enjoy the read and change your code. You most likely do it wrong right now! www.confluent.io/blog/guide-t...

Today marks SlateDB’s one year anniversary! It’s been a lot of fun. Thanks to @rohanpd.bsky.social @flaneur2024.bsky.social @almog.ai @vigneshc.bsky.social @paulbutler.org Jason Gustafson, David Moravek, and many others for joining the project. 😀

We are having two more (early career) open positions in our team, Java clients & #KafkaStreams (🇨🇦). If working on distributed data systems and stream processing sounds interesting to you, please apply: careers.confluent.io/jobs/1518441... We have also not closed the other two positions yet:

Looking forward to @sharatchander.bsky.social 's Keynote. Then, looking forward to hearing @gamussa.dev talking about Kafka and the Schema Registry, and then more! Java, Kafka, @kafkastreams.bsky.social, & @intellijidea.com - that's my tech stack! lp.jetbrains.com/intellij-ide... @jetbrains.com

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

Interesting. www.kafkastreams.money

We have two open (early career) engineering positions in our team (Canada 🇨🇦) If you are excited about contributing to #ApacheKafka with a focus on Java client and @kafkastreams.bsky.social this might be the right fit for you careers.confluent.io/jobs/1581205... careers.confluent.io/jobs/1580808...

Thrilled to announce that I'll be bringing my 'charming French accent' to #Current25 London to present my talk: 'Massive Kafka Streams Topology Revamp in Production: No Chaos, No Headaches! My Key Takeaways 🦾'. Can’t wait to share the lessons learned! #kafka #eda #kafkaStreams #kstreamplify

First time at #Current2025, and I’m incredibly lucky to have been selected as a speaker for two talks! 🔹 Optimizing Kafka Streams Joins, with @adamsouquieres.bsky.social 🔹 Exception Handling & DLQ in Kafka Streams – A deep dive into KIP-1033 & KIP-1034 Can’t wait to meet the #Kafka community!

Drum roll... 🥁 We released our Confluent Cloud UI for #KafkaStreams Instead of only seeing the internal consumer/producer clients in the "Clients" view, you now get a list of all your running #KafkaStreams applications, plus some basic statistics. --Long live the otter. 🦦

Apache Kafka 4.0.0 is released. Check out the release notes here: dlcdn.apache.org/kafka/4.0.0/...

@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.

This week, our 101 series has @ableegoldman.bsky.social diving deep into the world of performance optimization for Kafka Streams. This isn't just theory: she shows how we realized 10x throughput improvements by implementing these techniques in prod! www.responsive.dev/blog/perform...

Next entry in the Kafka Streams 101 series: application lifecycle. Very beginner friendly, but even the pros might find a useful tip or two -- for example: have you heard of the new standby task listener? Check it out: www.responsive.dev/blog/app-lif...

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...

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...

#StreamProcessing with @kafkastreams.bsky.social

🇮🇳 Current 2025 🇮🇳 Bengaluru, here I come. My talk "One Client to Rule them all" was accepted. Hope to see you there. #KafkaSummit #Current2025

Uff… hard to digest this all… Bottom line: both infinite and unbounded are wrong 😂

This will be the foundation for being able to branch @kafkastreams.bsky.social apps to support seamless blue/green deploys. It also allows you to branch a previous version of the state to debug an issue from the past. Powerful stuff coming to the world of stream processing!

How did Responsive simplify its architecture and achieve monstrously high availability with unlimited scale potential? Co-founder @almog.ai will share how replacing RocksDB with #ScyllaDB in #Kafka Streams led to big wins for their team at Monster Scale Summit. www.scylladb.com/monster-scal...

(2/2) And Kafka Streams EXTENDS Kafka and itself is modular and thus EXTENSIBLE. So it can run self-contained on your laptop and yet scale to 100k+ events/s on 100's of TBS of state WITHOUT having to change anything application code. Super bullish about its future given these trends.

Kafka Streams 101: Windows & Time! 🕰️ What's the difference between event, stream and wall clock time? 🪟 What are the four different types of windows? ⁉️ What are the important error messages and metrics, and what do they mean? 👉 Read the full lesson here: www.responsive.dev/blog/windows...

Kicking the tires on animated explanations of windowing strategies in Kafka Streams. Would love feedback on if this animation for session windows resonates: they keep growing until there is an 'inactivity gap' (no events for the key). This here shows a session window with inactivity gap of 10.

[1/5] Hey fellow Kafka Streams otters! You may have already seen my previous blog posts such as the "Debugging Rebalances" and "EOS guide" from last year (and if you haven't, go check them out! Links in thread) But now it's 2025, and time for me to think about what to write next...

I took this shot of a Sea otter chilling out in Morro Bay. You can see one of his big rear flippers sticking out. To see them is to love them.🌿🦦🦑

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

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!