Yennick Trevels
@digitalbuff.dev
Sharing 15+ years of software development experience on http://digitalbuff.dev.
Self-employed developer specialized in building data platforms and applications for clients.
Writing a book on Kafka Streams, follow me for updates!
Self-employed developer specialized in building data platforms and applications for clients.
Writing a book on Kafka Streams, follow me for updates!
Pinned
The wait is over — my Kafka Streams Field Guide is officially released! 🎉 🚀
Launch week = 15% off (auto‑applied on checkout)
Get your copy now! 👉 kafkastreamsfieldguide.com
#Kafka #KafkaStreams
Launch week = 15% off (auto‑applied on checkout)
Get your copy now! 👉 kafkastreamsfieldguide.com
#Kafka #KafkaStreams
Troubleshooting a Kafka Streams issue can cost multiple hours.
The Kafka Streams Field Guide helps you avoid OOMs, state-sharing bugs, long rebalances, and fragile exception handling.
If it saves you one afternoon of troubleshooting, it’s paid for itself
👉Get your copy now kafkastreamsfieldguide.com
The Kafka Streams Field Guide helps you avoid OOMs, state-sharing bugs, long rebalances, and fragile exception handling.
If it saves you one afternoon of troubleshooting, it’s paid for itself
👉Get your copy now 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 19, 2025 at 7:30 AM
Troubleshooting a Kafka Streams issue can cost multiple hours.
The Kafka Streams Field Guide helps you avoid OOMs, state-sharing bugs, long rebalances, and fragile exception handling.
If it saves you one afternoon of troubleshooting, it’s paid for itself
👉Get your copy now kafkastreamsfieldguide.com
The Kafka Streams Field Guide helps you avoid OOMs, state-sharing bugs, long rebalances, and fragile exception handling.
If it saves you one afternoon of troubleshooting, it’s paid for itself
👉Get your copy now kafkastreamsfieldguide.com
Get my Kafka Streams Performance Pack (Free PDF). Two critical chapters from my new Kafka Streams Field Guide on the topics that matter most in production.
#ApacheKafka #KafkaStreams
#ApacheKafka #KafkaStreams
December 17, 2025 at 7:46 PM
Get my Kafka Streams Performance Pack (Free PDF). Two critical chapters from my new Kafka Streams Field Guide on the topics that matter most in production.
#ApacheKafka #KafkaStreams
#ApacheKafka #KafkaStreams
Reposted by Yennick Trevels
My "No Graphics API" blog post is live! Please repost :)
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
No Graphics API — Sebastian Aaltonen
Graphics APIs and shader languages have significantly increased in complexity over the past decade. It’s time to start discussing how to strip down the abstractions to simplify development, improve pe...
www.sebastianaaltonen.com
December 16, 2025 at 6:52 PM
My "No Graphics API" blog post is live! Please repost :)
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
The wait is over — my Kafka Streams Field Guide is officially released! 🎉 🚀
Launch week = 15% off (auto‑applied on checkout)
Get your copy now! 👉 kafkastreamsfieldguide.com
#Kafka #KafkaStreams
Launch week = 15% off (auto‑applied on checkout)
Get your copy now! 👉 kafkastreamsfieldguide.com
#Kafka #KafkaStreams
December 16, 2025 at 8:12 AM
The wait is over — my Kafka Streams Field Guide is officially released! 🎉 🚀
Launch week = 15% off (auto‑applied on checkout)
Get your copy now! 👉 kafkastreamsfieldguide.com
#Kafka #KafkaStreams
Launch week = 15% off (auto‑applied on checkout)
Get your copy now! 👉 kafkastreamsfieldguide.com
#Kafka #KafkaStreams
🚀 It’s almost time — the Kafka Streams Field Guide releases TOMORROW!
This isn’t a beginner’s guide. It’s built for engineers who want to understand the framework deeply, solve real issues, and design resilient, high-performance apps.
Be ready.
kafkastreamsfieldguide.com
This isn’t a beginner’s guide. It’s built for engineers who want to understand the framework deeply, solve real issues, and design resilient, high-performance apps.
Be ready.
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 15, 2025 at 7:45 AM
🚀 It’s almost time — the Kafka Streams Field Guide releases TOMORROW!
This isn’t a beginner’s guide. It’s built for engineers who want to understand the framework deeply, solve real issues, and design resilient, high-performance apps.
Be ready.
kafkastreamsfieldguide.com
This isn’t a beginner’s guide. It’s built for engineers who want to understand the framework deeply, solve real issues, and design resilient, high-performance apps.
Be ready.
kafkastreamsfieldguide.com
🚀 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 12, 2025 at 7:45 AM
🚀 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
📣 Release Date Announcement!
My #KafkaStreams Field Guide releases next Tuesday, Dec 16th!
I can’t wait to share my 8 insights from running Kafka Streams in production—so you can build & deploy with confidence.
kafkastreamsfieldguide.com
My #KafkaStreams Field Guide releases next Tuesday, Dec 16th!
I can’t wait to share my 8 insights from running Kafka Streams in production—so you can build & deploy with confidence.
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 9, 2025 at 10:24 AM
📣 Release Date Announcement!
My #KafkaStreams Field Guide releases next Tuesday, Dec 16th!
I can’t wait to share my 8 insights from running Kafka Streams in production—so you can build & deploy with confidence.
kafkastreamsfieldguide.com
My #KafkaStreams Field Guide releases next Tuesday, Dec 16th!
I can’t wait to share my 8 insights from running Kafka Streams in production—so you can build & deploy with confidence.
kafkastreamsfieldguide.com
🚀 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 Yennick Trevels
🚨NEW DOC ALERT🕹️
The Making of Disco Elysium - Part One: Foundations
www.youtube.com/watch?v=eH6m...
After over 18 months of research, interviews & editing our Disco Elysium series is here.
In this first episode we focus on the cultural and personal foundations of the world of Elysium.
The Making of Disco Elysium - Part One: Foundations
www.youtube.com/watch?v=eH6m...
After over 18 months of research, interviews & editing our Disco Elysium series is here.
In this first episode we focus on the cultural and personal foundations of the world of Elysium.
The Making of Disco Elysium - Part One: Foundations
YouTube video by /noclip
www.youtube.com
November 28, 2025 at 5:30 PM
🚨NEW DOC ALERT🕹️
The Making of Disco Elysium - Part One: Foundations
www.youtube.com/watch?v=eH6m...
After over 18 months of research, interviews & editing our Disco Elysium series is here.
In this first episode we focus on the cultural and personal foundations of the world of Elysium.
The Making of Disco Elysium - Part One: Foundations
www.youtube.com/watch?v=eH6m...
After over 18 months of research, interviews & editing our Disco Elysium series is here.
In this first episode we focus on the cultural and personal foundations of the world of Elysium.
Reposted by Yennick Trevels
Wait what's this?!
I've managed to pull my finger out to ship a list of **a whole lot of interesting links about stuff going on in the world of data for November**, a whole three days left until the end of the month!
rmoff.net/2025/11/26/i...
I've managed to pull my finger out to ship a list of **a whole lot of interesting links about stuff going on in the world of data for November**, a whole three days left until the end of the month!
rmoff.net/2025/11/26/i...
Interesting links - November 2025
rmoff.net
November 27, 2025 at 5:25 PM
Wait what's this?!
I've managed to pull my finger out to ship a list of **a whole lot of interesting links about stuff going on in the world of data for November**, a whole three days left until the end of the month!
rmoff.net/2025/11/26/i...
I've managed to pull my finger out to ship a list of **a whole lot of interesting links about stuff going on in the world of data for November**, a whole three days left until the end of the month!
rmoff.net/2025/11/26/i...
Interesting interview with Matthias J. Sax, technical lead for #KafkaStreams at Confluent.
www.youtube.com/watch?v=nrDU...
www.youtube.com/watch?v=nrDU...
Reimagining Stream Processing with Matthias J. Sax | Ep. 9 | Confluent Developer
Listen: https://confluent.buzzsprout.com | Viktor Gamov talks to Matthias J. Sax (Confluent) about his career in stream processing and, specifically, Kafka Streams. Matthias’ first job: an…
www.youtube.com
November 17, 2025 at 1:32 PM
Interesting interview with Matthias J. Sax, technical lead for #KafkaStreams at Confluent.
www.youtube.com/watch?v=nrDU...
www.youtube.com/watch?v=nrDU...
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
Keeper was a really unique game with a beautiful art style. Double Fine now released this making of documentary. Loved the behind the scenes look! #gamedev
youtu.be/1OOfRTfMnx0?...
youtu.be/1OOfRTfMnx0?...
The Making Of Double Fine's Keeper
Peer behind the striped Double Fine curtains for another glimpse behind the scenes, in this Making-of Keeper featurette!
Last time we made one of these it was a huge 33 course banquet, but this…
youtu.be
November 15, 2025 at 3:54 PM
Keeper was a really unique game with a beautiful art style. Double Fine now released this making of documentary. Loved the behind the scenes look! #gamedev
youtu.be/1OOfRTfMnx0?...
youtu.be/1OOfRTfMnx0?...
Reposted by Yennick Trevels
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.
🚀 I've built an interactive simulation of #Kafka Streams’ architecture!
See messages flow through the simulation. Tweak partitions, threads and throughput. Watch how it impacts processing. Great for understanding or explaining Kafka Streams!
Try it here: kafkastreamsfieldguide.com/tools/intera...
See messages flow through the simulation. Tweak partitions, threads and throughput. Watch how it impacts processing. Great for understanding or explaining Kafka Streams!
Try it here: kafkastreamsfieldguide.com/tools/intera...
November 10, 2025 at 8:00 AM
🚀 I've built an interactive simulation of #Kafka Streams’ architecture!
See messages flow through the simulation. Tweak partitions, threads and throughput. Watch how it impacts processing. Great for understanding or explaining Kafka Streams!
Try it here: kafkastreamsfieldguide.com/tools/intera...
See messages flow through the simulation. Tweak partitions, threads and throughput. Watch how it impacts processing. Great for understanding or explaining Kafka Streams!
Try it here: kafkastreamsfieldguide.com/tools/intera...
Exciting news about my #KafkaStreams Field Guide! 📚
✅ Will be available in HTML, PDF, and EPUB
✅ Code examples in both Java and Scala
Read it however you like, in whichever language you prefer. More details coming soon!
#ApacheKafka #dataengineering
kafkastreamsfieldguide.com
✅ Will be available in HTML, PDF, and EPUB
✅ Code examples in both Java and Scala
Read it however you like, in whichever language you prefer. More details coming soon!
#ApacheKafka #dataengineering
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
November 3, 2025 at 7:30 AM
Exciting news about my #KafkaStreams Field Guide! 📚
✅ Will be available in HTML, PDF, and EPUB
✅ Code examples in both Java and Scala
Read it however you like, in whichever language you prefer. More details coming soon!
#ApacheKafka #dataengineering
kafkastreamsfieldguide.com
✅ Will be available in HTML, PDF, and EPUB
✅ Code examples in both Java and Scala
Read it however you like, in whichever language you prefer. More details coming soon!
#ApacheKafka #dataengineering
kafkastreamsfieldguide.com
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...
Interesting new tool to diagnose Kafka clusters! Already has 17 scenarios built-in. They're looking for feedback to add more 👇
We are thrilled to announce we are building KafkaPilot, a proactive tool designed to diagnose and resolve common issues in Apache Kafka.
🔗 KafkaPilot explained: softwaremill.com/kafkapilot-u...
#KafkaPilot #ApacheKafka #Kafka #DevTools
🔗 KafkaPilot explained: softwaremill.com/kafkapilot-u...
#KafkaPilot #ApacheKafka #Kafka #DevTools
October 20, 2025 at 12:30 PM
Interesting new tool to diagnose Kafka clusters! Already has 17 scenarios built-in. They're looking for feedback to add more 👇
Great overview of Kafka Streams!
October 15, 2025 at 8:23 PM
Great overview of Kafka Streams!
Reposted by Yennick Trevels
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...
My Kafka Streams monitoring guide 👇
Learn which metrics to look at first and how to make them available for easy exploration. Discover new dashboards, new UIs, new tools, and other monitoring approaches next to metrics. #ApacheKafka #dataengineering
kafkastreamsfieldguide.com/articles/kaf...
Learn which metrics to look at first and how to make them available for easy exploration. Discover new dashboards, new UIs, new tools, and other monitoring approaches next to metrics. #ApacheKafka #dataengineering
kafkastreamsfieldguide.com/articles/kaf...
Kafka Streams Monitoring guide | Kafka Streams Field Guide Book
Learn how to monitor Kafka Streams in production
kafkastreamsfieldguide.com
October 14, 2025 at 12:46 PM
My Kafka Streams monitoring guide 👇
Learn which metrics to look at first and how to make them available for easy exploration. Discover new dashboards, new UIs, new tools, and other monitoring approaches next to metrics. #ApacheKafka #dataengineering
kafkastreamsfieldguide.com/articles/kaf...
Learn which metrics to look at first and how to make them available for easy exploration. Discover new dashboards, new UIs, new tools, and other monitoring approaches next to metrics. #ApacheKafka #dataengineering
kafkastreamsfieldguide.com/articles/kaf...
Reposted by Yennick Trevels
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_...
Thanks to 53 contributors and your RM Christo Lolov.
For more details, checkout the announcement:
kafka.apache.org/blog#apache_...
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
kafka.apache.org
October 13, 2025 at 7:40 PM
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_...
Thanks to 53 contributors and your RM Christo Lolov.
For more details, checkout the announcement:
kafka.apache.org/blog#apache_...
Reposted by Yennick Trevels
Check out our big preview of MEWGENICS.
I played 30+ hours of the game, interviewed Edmund and Tyler and put together a 35 minute preview about one of 2026’s biggest games.
youtu.be/VyxbfbfXzQM?...
I played 30+ hours of the game, interviewed Edmund and Tyler and put together a 35 minute preview about one of 2026’s biggest games.
youtu.be/VyxbfbfXzQM?...
Mewgenics - The BIG PREVIEW (Design, History, Interviews & Gameplay)
YouTube video by noclip_2
youtu.be
October 7, 2025 at 7:16 PM
Check out our big preview of MEWGENICS.
I played 30+ hours of the game, interviewed Edmund and Tyler and put together a 35 minute preview about one of 2026’s biggest games.
youtu.be/VyxbfbfXzQM?...
I played 30+ hours of the game, interviewed Edmund and Tyler and put together a 35 minute preview about one of 2026’s biggest games.
youtu.be/VyxbfbfXzQM?...
🚀 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
Kafka Streams Field Guide | Kafka Streams Field Guide Book
kafkastreamsfieldguide.com
September 30, 2025 at 3:25 PM
🚀 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