Matthias J. Sax 🦦
@mjsax.bsky.social
American Homeowner 🇺🇸 | Battle Born | Go Bills 🦬 | Software Engineer at Confluent | GM of KafkaStreams 🦦 | ASF Member, Committer and PMC member (Apache Kafka, Apache Flink, Apache Storm) — Reno. Home Means Nevada.
🚀 Launch week is almost here!
The #KafkaStreams Field Guide drops next Tue, Dec 16 — and early buyers get 15% off during launch week with code LAUNCHWEEK (auto-applied at checkout).
I’m also using purchasing power parity so you get a fair regional price.
kafkastreamsfieldguide.com
The #KafkaStreams Field Guide drops next Tue, Dec 16 — and early buyers get 15% off during launch week with code LAUNCHWEEK (auto-applied at checkout).
I’m also using purchasing power parity so you get a fair regional price.
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
kafkastreamsfieldguide.com
December 13, 2025 at 4:33 AM
Reposted by Matthias J. Sax 🦦
Big news for open source in Taiwan!
ALC Taipei has officially launched with The ASF's support and is already contributing across Kafka, Airflow, YuniKorn, Ozone and more.
Read the full story → buff.ly/RSPuecn
#CommunityOverCode #OpenSource
ALC Taipei has officially launched with The ASF's support and is already contributing across Kafka, Airflow, YuniKorn, Ozone and more.
Read the full story → buff.ly/RSPuecn
#CommunityOverCode #OpenSource
ALC Taipei: Igniting the Apache Open Source Movement in Taiwan - The ASF Blog
By: Chia-Ping Tsai (ALC Taipei Chief) We are absolutely thrilled to announce the official launch of the Apache Local Community (ALC) Taipei, established with the full support of The ASF! ALC Taipei…
news.apache.org
December 9, 2025 at 6:29 PM
Big news for open source in Taiwan!
ALC Taipei has officially launched with The ASF's support and is already contributing across Kafka, Airflow, YuniKorn, Ozone and more.
Read the full story → buff.ly/RSPuecn
#CommunityOverCode #OpenSource
ALC Taipei has officially launched with The ASF's support and is already contributing across Kafka, Airflow, YuniKorn, Ozone and more.
Read the full story → buff.ly/RSPuecn
#CommunityOverCode #OpenSource
10K. Quite a number!
The ASF has reached 10,000 committers! Every committer plays a role in building software for the public good.
This milestone also showcases the power of our global community and the Apache Way.
Huge thanks to all who contribute! buff.ly/Zoua7Zg
#CommunityOverCode #opensource
This milestone also showcases the power of our global community and the Apache Way.
Huge thanks to all who contribute! buff.ly/Zoua7Zg
#CommunityOverCode #opensource
December 6, 2025 at 8:44 AM
10K. Quite a number!
Sounds like fun!
Do you like databases?
Do you want to hear two database professors rant about them?
Do you need one of those professors to have a Turing Award for databases?
If yes, then join Mike Stonebraker and I next Wed Dec 10 @ 1:00pm EST for database hot takes: www.dbos.dev/webcast-2025...
Do you want to hear two database professors rant about them?
Do you need one of those professors to have a Turing Award for databases?
If yes, then join Mike Stonebraker and I next Wed Dec 10 @ 1:00pm EST for database hot takes: www.dbos.dev/webcast-2025...
2025 in Review with Mike Stonebraker and Andy Pavlo
Webcast Dec 10: DBMS researchers Mike Stonebraker (MIT / DBOS) and Andy Pavlo (CMU) discuss which data and CS trends are heating up or cooling down heading into 2026.
www.dbos.dev
December 6, 2025 at 8:39 AM
Sounds like fun!
We are backing up a larger KIP for Kafka Streams. Exciting! …headers… cough.
Stay tuned. Maybe a we can publish it as a holiday present.
Stay tuned. Maybe a we can publish it as a holiday present.
December 5, 2025 at 4:13 PM
We are backing up a larger KIP for Kafka Streams. Exciting! …headers… cough.
Stay tuned. Maybe a we can publish it as a holiday present.
Stay tuned. Maybe a we can publish it as a holiday present.
Reposted by Matthias J. Sax 🦦
🚀 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-...
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-...
December 2, 2025 at 12:22 PM
🚀 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-...
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-...
Reposted by Matthias J. Sax 🦦
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
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
Kafka Streams News - November 2025 | Kafka Streams Field Guide Book
Latest news and content from the Kafka Streams community for November 2025
kafkastreamsfieldguide.com
November 17, 2025 at 10:57 AM
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
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
Reposted by Matthias J. Sax 🦦
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.
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.
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
kafka.apache.org
November 14, 2025 at 5:56 PM
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.
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.
#ApacheKafka did grow up over the years, and conference talks changed accordingly... -- If you like to nerd out, "The Kafka Protocol Destructed" talk by Mateo Rojas from LittleHorse is a refreshing change back to the roots!
current.confluent.io/post-confere...
current.confluent.io/post-confere...
The Kafka Protocol Deconstructed: A Live-Coded Deep Dive
Kafka powers the real-time data infrastructure of countless organizations, but how many of us really understand the magic behind its speed and reliability? What makes a Kafka broker capable of handlin...
current.confluent.io
November 11, 2025 at 10:51 PM
#ApacheKafka did grow up over the years, and conference talks changed accordingly... -- If you like to nerd out, "The Kafka Protocol Destructed" talk by Mateo Rojas from LittleHorse is a refreshing change back to the roots!
current.confluent.io/post-confere...
current.confluent.io/post-confere...
Repeat after me: Kafka TX timeout is not a producer liveness check, but a guard against head of line blocking for read-committed consumers.
November 8, 2025 at 6:59 AM
Repeat after me: Kafka TX timeout is not a producer liveness check, but a guard against head of line blocking for read-committed consumers.
Including “Strengthening Kafka Streams Operations and Observability” — If you are using #KafkaStreams on Confluent Cloud you should check out the announcement.
Want to build a reliable AI application? 🤖 Make sure trustworthy streaming data is at its core.
From Confluent Intelligence to a line-up of Tableflow upgrades, find out how our powerful new additions to the world’s data streaming platform can help you do just that: https://cnfl.io/4qUKVk6
From Confluent Intelligence to a line-up of Tableflow upgrades, find out how our powerful new additions to the world’s data streaming platform can help you do just that: https://cnfl.io/4qUKVk6
November 6, 2025 at 1:34 AM
Including “Strengthening Kafka Streams Operations and Observability” — If you are using #KafkaStreams on Confluent Cloud you should check out the announcement.
#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
"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
Life Is But A Stream Podcast Hosted by Joseph Morais
Life Is But A Stream is a web show and podcast for tech leaders looking to harness real-time data streaming to accelerate innovation and drive business impact.
www.confluent.io
November 5, 2025 at 1:43 AM
#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
"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
Reposted by Matthias J. Sax 🦦
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...
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...
October 27, 2025 at 7:40 AM
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...
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...
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...
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...
Data Streamign Awards Winner | Michelin
Winner of the 2025 Data Modernization and Contribution award
current.confluent.io
October 31, 2025 at 8:04 AM
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...
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...
October 30, 2025 at 3:50 PM
Reposted by Matthias J. Sax 🦦
Calling database nerds in SF! I'm covering SlateDB at the systems meetup next Wednesday (10/29). If you're around, I'd love to meet you in person (that way you'll have proof I'm not just an AI bot).
👉 luma.com/e7feg2i6
👉 luma.com/e7feg2i6
October 21, 2025 at 3:51 PM
Calling database nerds in SF! I'm covering SlateDB at the systems meetup next Wednesday (10/29). If you're around, I'd love to meet you in person (that way you'll have proof I'm not just an AI bot).
👉 luma.com/e7feg2i6
👉 luma.com/e7feg2i6
Reposted by Matthias J. Sax 🦦
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 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...
Monitor Kafka Streams Health in Confluent Cloud
Quickly troubleshoot Kafka Streams apps with new health metrics in Confluent Cloud. Spot bottlenecks, monitor RocksDB, and reduce MTTR—no extra code.
www.confluent.io
October 14, 2025 at 4:27 PM
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 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...
Reposted by Matthias J. Sax 🦦
I've just published the 92nd edition of my Kafka Monthly Digest! It covers the 4.1.0 release, as well as progress on 4.0.1 and 4.2.0. I also covers new KIPs, recent community releases and blog posts.
developers.redhat.com/blog/2025/10...
developers.redhat.com/blog/2025/10...
Kafka Monthly Digest: September 2025 | Red Hat Developer
This edition of the Kafka Monthly Digest covers the new Apache Kafka 4.1.0 release as well as the releases in progress: 4.0.1 and 4.2.0. It also looks at the new KIPs, community project releases and
developers.redhat.com
October 1, 2025 at 3:49 PM
I've just published the 92nd edition of my Kafka Monthly Digest! It covers the 4.1.0 release, as well as progress on 4.0.1 and 4.2.0. I also covers new KIPs, recent community releases and blog posts.
developers.redhat.com/blog/2025/10...
developers.redhat.com/blog/2025/10...
Reposted by Matthias J. Sax 🦦
Any KIP-1071 experience out there?
Asking for a friend.
Asking for a friend.
September 30, 2025 at 2:34 AM
Any KIP-1071 experience out there?
Asking for a friend.
Asking for a friend.
I hate it when @kafkastreams.bsky.social ships with a memory leak. I hate it even more, if I am the offender…
September 30, 2025 at 4:36 PM
I hate it when @kafkastreams.bsky.social ships with a memory leak. I hate it even more, if I am the offender…
Reposted by Matthias J. Sax 🦦
🚨 Breaking News from Community Over Code 🚨
Introducing The ASF’s New Logo buff.ly/DzgT82w
#CommunityOverCode #opensource
Introducing The ASF’s New Logo buff.ly/DzgT82w
#CommunityOverCode #opensource
September 11, 2025 at 3:12 PM
🚨 Breaking News from Community Over Code 🚨
Introducing The ASF’s New Logo buff.ly/DzgT82w
#CommunityOverCode #opensource
Introducing The ASF’s New Logo buff.ly/DzgT82w
#CommunityOverCode #opensource
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...
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...
careers.confluent.io
September 10, 2025 at 12:39 AM
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...
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...
Reposted by Matthias J. Sax 🦦
Got a data monster slowing your business down?
Move from batch to real-time with The World’s Data Streaming Platform. Get the right data. Right where you need it. Right now.
Learn how to put your data monster to work ➡️ www.youtube.com/watch?v=HWAD...
Move from batch to real-time with The World’s Data Streaming Platform. Get the right data. Right where you need it. Right now.
Learn how to put your data monster to work ➡️ www.youtube.com/watch?v=HWAD...
Confluent | Put Your Data Monster to Work for You
YouTube video by Confluent
www.youtube.com
September 8, 2025 at 2:04 PM
Got a data monster slowing your business down?
Move from batch to real-time with The World’s Data Streaming Platform. Get the right data. Right where you need it. Right now.
Learn how to put your data monster to work ➡️ www.youtube.com/watch?v=HWAD...
Move from batch to real-time with The World’s Data Streaming Platform. Get the right data. Right where you need it. Right now.
Learn how to put your data monster to work ➡️ www.youtube.com/watch?v=HWAD...