Sign in

Yennick Trevels

@digitalbuff.dev
47 followers 63 following 165 posts

Sharing 15+ years of software development experience on digitalbuff.dev. Self-employed developer specialized in building data platforms and applications for clients. Writing a book on Kafka Streams, follow me for updates!

PostsRepliesMedia
Yennick Trevels @digitalbuff.dev · 23/03/2026
Since Gandi has been acquired by Total Webhosting Solutions, they started hiking prices in a big way. INWX provides no-nonsense domain name registration, kind of like Gandi was before the takeover.
020
Yennick Trevels @digitalbuff.dev · 23/03/2026
Updated my article on the tech and services I use for my online presence. Biggest change: switched from Gandi to INWX as my domain registrar. digitalbuff.dev/articles/dev...
digitalbuff.dev
Tech and Services of My Online Presence | DigitalBuff
Learn what technology I use for my online presence, from cloud servers to SEO and marketing tech
100
Yennick Trevels @digitalbuff.dev · 19/01/2026
The code for Responsive's solution to the scaling problem is available on Github: github.com/responsivede...
github.com
GitHub - responsivedev/responsive-pub: A highly available and infinitely scalable, drop-in replacement for Kafka Streams
A highly available and infinitely scalable, drop-in replacement for Kafka Streams - responsivedev/responsive-pub
000
Yennick Trevels @digitalbuff.dev · 19/01/2026
Released my Kafka Streams roundup, then this gem of a podcast episode dropped one hour later. A must-watch story about hacking #KafkaStreams to defy partition limits and its parallelism constraints. www.youtube.com/watch?v=QEZI... #ApacheKafka
youtube.com
Hacking Kafka Streams with Sophie Blee‑Goldman | Ep. 15 | Confluent Developer Podcast
Listen: https://confluent.buzzsprout.com | Tim Berglund talks to Sophie Blee-Goldman (Responsive) about her career in container orchestration and Kafka Streams. Sophie’s first job: interning at…
110
Yennick Trevels @digitalbuff.dev · 19/01/2026
Want to know what happened in the #KafkaStreams community recently? I've just published my Kafka Streams roundup! 🗞️ Two new KIPs were started this new year, and some excellent articles were published in December. kafkastreamsfieldguide.com/articles/kaf... #ApacheKafka
kafkastreamsfieldguide.com
Kafka Streams Roundup - January 2026 | Kafka Streams Field Guide Book
Latest news and content from the Kafka Streams community for January 2026
000
Yennick Trevels @digitalbuff.dev · 23/12/2025
🎄 🎁 Holiday sale - 10% off the Kafka Streams Field Guide Give yourself the gift of knowledge—less time troubleshooting, more time building with confidence in 2026. kafkastreamsfieldguide.com #ApacheKafka #KafkaStreams
000
Yennick Trevels @digitalbuff.dev · 22/12/2025
Price goes up tomorrow - Launch week ending. Today is the last day to get the Kafka Streams Field Guide at a 15% launch discount. If you’ve been meaning to grab it, now’s the time. kafkastreamsfieldguide.com #ApacheKafka #KafkaStreams
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
000
Yennick Trevels @digitalbuff.dev · 19/12/2025
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
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
010
Yennick Trevels @digitalbuff.dev · 17/12/2025
No fluff. Just straightforward advice and deep insights to improve your Kafka Streams performance. Get it free: kafkastreamsfieldguide.com/free-chapters
kafkastreamsfieldguide.com
Kafka Streams Field Guide - Free Chapters | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
000
Yennick Trevels @digitalbuff.dev · 17/12/2025
📌 Partitioning Strategy: How to size topics, optimize message distribution, ensure ordering, and handle co-partitioning. 📌 Rebalance Tuning: Understand warmup tasks and how to configure them to reach stable, higher throughput faster.
100
Yennick Trevels @digitalbuff.dev · 17/12/2025
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
100
Reposted by Yennick Trevels
Sebastian Aaltonen @sebaaltonen.bsky.social · 16/12/2025
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".
sebastianaaltonen.com
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...
19475194
Yennick Trevels @digitalbuff.dev · 16/12/2025
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
010
Yennick Trevels @digitalbuff.dev · 15/12/2025
🚀 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
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
010
Yennick Trevels @digitalbuff.dev · 12/12/2025
🚀 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
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
020
Yennick Trevels @digitalbuff.dev · 09/12/2025
📣 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
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
000
Yennick Trevels @digitalbuff.dev · 08/12/2025
IBM acquires Confluent, the #Kafka company. newsroom.ibm.com/2025-12-08-i...
newsroom.ibm.com
IBM to Acquire Confluent to Create Smart Data Platform for Enterprise Generative AI
IBM and Confluent, Inc. announced they have entered into a definitive agreement under which IBM will acquire all of the issued and outstanding common shares of Confluent for $31 per share,…
000
Yennick Trevels @digitalbuff.dev · 02/12/2025
🚀 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-...
0103
Reposted by Yennick Trevels
/noclip @noclipvideo.bsky.social · 28/11/2025
🚨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.
youtube.com
The Making of Disco Elysium - Part One: Foundations
YouTube video by /noclip
6605259
Reposted by Yennick Trevels
rmoff 🏃‍♂️🫖🥓 @rmoff.net · 27/11/2025
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...
rmoff.net
Interesting links - November 2025
1135
Yennick Trevels @digitalbuff.dev · 17/11/2025
Interesting interview with Matthias J. Sax, technical lead for #KafkaStreams at Confluent. www.youtube.com/watch?v=nrDU...
youtube.com
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…
031
Yennick Trevels @digitalbuff.dev · 17/11/2025
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
kafkastreamsfieldguide.com
Kafka Streams News - November 2025 | Kafka Streams Field Guide Book
Latest news and content from the Kafka Streams community for November 2025
012
Yennick Trevels @digitalbuff.dev · 15/11/2025
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
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…
060
Reposted by Yennick Trevels
Kafka Streams @kafkastreams.bsky.social · 14/11/2025
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.
kafka.apache.org
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
043
Yennick Trevels @digitalbuff.dev · 10/11/2025
🚀 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...
000
Yennick Trevels @digitalbuff.dev · 03/11/2025
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
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
Field guide with 8 essential insights for running Kafka Streams in production
010
Yennick Trevels @digitalbuff.dev · 27/10/2025
It leverages the awesome kineticedge/kafka-streams-dashboards stack, so it's very easy to try out! buff.ly/6IgnSVU
buff.ly
GitHub - kineticedge/kafka-streams-dashboards: showcases Grafana dashboards for Kafka Stream applications leveraging client JMX metrics.
showcases Grafana dashboards for Kafka Stream applications leveraging client JMX metrics. - kineticedge/kafka-streams-dashboards
010
Yennick Trevels @digitalbuff.dev · 27/10/2025
It shows you processing latency, message flow per topic, tracks RocksDB activity, breaks down exactly how each thread spends its time (processing, punctuating, committing, or polling), and more…
110
Yennick Trevels @digitalbuff.dev · 27/10/2025
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...
152
Yennick Trevels @digitalbuff.dev · 20/10/2025
Interesting new tool to diagnose Kafka clusters! Already has 17 scenarios built-in. They're looking for feedback to add more 👇
000
Yennick Trevels @digitalbuff.dev · 15/10/2025
Great overview of Kafka Streams!
010
Reposted by Yennick Trevels
Matthias J. Sax 🦦 @mjsax.bsky.social · 14/10/2025
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...
confluent.io
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.
065
Yennick Trevels @digitalbuff.dev · 14/10/2025
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...
kafkastreamsfieldguide.com
Kafka Streams Monitoring guide | Kafka Streams Field Guide Book
Learn how to monitor Kafka Streams in production
000
Reposted by Yennick Trevels
Kafka Streams @kafkastreams.bsky.social · 13/10/2025
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_...
kafka.apache.org
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
054
Reposted by Yennick Trevels
dannyodwyer @dannyodwyer.bsky.social · 07/10/2025
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?...
youtu.be
Mewgenics - The BIG PREVIEW (Design, History, Interviews & Gameplay)
YouTube video by noclip_2
48512
Yennick Trevels @digitalbuff.dev · 30/09/2025
This field guide is for anyone running Kafka Streams in production. It will save you days troubleshooting common issues. It will help you understand how Kafka Streams works internally, so that you can design new pipelines with confidence.
000
Yennick Trevels @digitalbuff.dev · 30/09/2025
Why this book? Most Kafka Streams content either covers only the basics or is scattered all over the internet. This field guide bridges that gap—concrete patterns, practical techniques, and lessons from years of coaching a team using Kafka Streams.
110
Yennick Trevels @digitalbuff.dev · 30/09/2025
🚀 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
kafkastreamsfieldguide.com
Kafka Streams Field Guide | Kafka Streams Field Guide Book
121
Yennick Trevels @digitalbuff.dev · 22/09/2025
Great podcast episode on Duck Lake, with the creators. It's quickly developing into a proper Iceberg/Delta Lake competitor with a new twist, and I'm looking forward to its 1.0 release. #dataengineering www.dataengineeringpodcast.com/episodepage/...
dataengineeringpodcast.com
Duck Lake: Simplifying the Lakehouse Ecosystem
Summary In this episode of the Data Engineering Podcast Hannes Mühleisen and Mark Raasveldt, the creators of DuckDB, share their work on Duck Lake, a new…
000
Reposted by Yennick Trevels
DuckDB @duckdb.org · 18/09/2025
🚀 We released version 0.3 of the DuckLake specification and the DuckDB ducklake extension today. It includes interoperability with Iceberg, support for geometry types and more. Check the announcement blog for more details ducklake.select/2025/09/17/d...
03911
Reposted by Yennick Trevels
/noclip @noclipvideo.bsky.social · 12/09/2025
IT'S OUR NINTH BIRTHDAY 🎉 So we're launching a brand new channel - dedicated to discovering new games that push our industry forward, previews of exciting new titles and reporting on the issues that face gaming today. welcome to noclip_2 TRAILER: www.youtube.com/watch?v=K7lf...
youtube.com
Welcome to noclip_2 - Launch Trailer
YouTube video by noclip_2
21605152
Yennick Trevels @digitalbuff.dev · 10/09/2025
There's also an absolutely incredible evening show that is of a scale that is truly absurd. 2500+ actors (I think all volunteers) on a 23-hectare stage, with 28000 costumes, fireworks, drones, water fountains, fire breathers, 3D projections 🤯 youtu.be/3K9DoayS5rQ?...
youtu.be
La Cinéscénie | Spectacle nocturne | Puy du Fou
"La Cinéscénie", le grand spectacle de nuit du Puy du Fou, est devenue un mythe. Découvrez la bande annonce du plus grand spectacle nocturne du monde, joué depuis 1977 au Puy du Fou. Superproduction…
000
Yennick Trevels @digitalbuff.dev · 10/09/2025
This gives an impression youtu.be/fHAU1BrLQO8?...
youtu.be
Vivez l'expérience Puy du Fou 2019
Spectacles grandioses et hôtels insolites, passez un séjour inoubliable en famille ou entre amis au Puy du Fou ! Il y a des mondes et des époques que l'on croyait à jamais disparus. Pourtant, la…
100
Yennick Trevels @digitalbuff.dev · 10/09/2025
Had a two-day trip to Puy du Fou in France. A truly special theme park you must visit! No rides, only historical shows of exceptional quality and grandeur. Entire sets change before your eyes, with magnificent costumes, lots of actors. No other theme park comes even close to this one.
100
Reposted by Yennick Trevels
Kafka Streams @kafkastreams.bsky.social · 04/09/2025
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_...
kafka.apache.org
Apache Kafka
Apache Kafka: A Distributed Streaming Platform.
044
Yennick Trevels @digitalbuff.dev · 01/09/2025
My experience with AI (Perplexity) in creating a 2-day schedule: terrible. Used deep research mode, but even with multiple iterations, it's not able to follow basic scheduling rules.
000
Reposted by Yennick Trevels
Kinell @sinistercinemastudios.art · 28/08/2025
This is some of the hardest shit I've seen in my life
7741881155
Yennick Trevels @digitalbuff.dev · 29/08/2025
MCP servers for AI are finally working properly now in JetBrains IDEs. Time to hook up the context7.com MCP server 🚀
context7.com
Context7 - Up-to-date documentation for LLMs and AI code editors
Generate context with up-to-date documentation for LLMs and AI code editors
000
Yennick Trevels @digitalbuff.dev · 21/08/2025
Iceberg topics for #ApacheKafka, as an open source plugin for Kafka brokers! While still in beta, this plugin by Aiven looks like it will become a very interesting alternative to Confluent's Tableflow. #dataengineering aiven.io/blog/iceberg...
aiven.io
Iceberg Topics for Apache Kafka®: Zero ETL, Zero Copy
Open Source Kafka users get native Apache Iceberg™ topics that collapse ETL and reduce costs - one write to the data lake, many reads - zero copies.
000
Yennick Trevels @digitalbuff.dev · 14/08/2025
Proof it's real with this x.com cross-post 😀: x.com/YennickT/sta...
x.com
Yennick Trevels on X: "It's alive! #buffengine #gamedev https://t.co/3P2XpeYEYR https://t.co/8FwQWhqrid" / X
It's alive! #buffengine #gamedev https://t.co/3P2XpeYEYR https://t.co/8FwQWhqrid
000