Yennick Trevels

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!

47 followers63 following165 posts

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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.comKafka Streams Field Guide | Kafka Streams Field Guide BookField guide with 8 essential insights for running Kafka Streams in production

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

📌 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.

Yennick Trevels reposted

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…

Interesting new tool to diagnose Kafka clusters! Already has 17 scenarios built-in. They're looking for feedback to add more 👇

SoftwareMill@softwaremill.com

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

Yennick Trevels reposted

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.ioMonitor Kafka Streams Health in Confluent CloudQuickly troubleshoot Kafka Streams apps with new health metrics in Confluent Cloud. Spot bottlenecks, monitor RocksDB, and reduce MTTR—no extra code.

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.

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.

Yennick Trevels reposted

🚀 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...

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.

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.beLa 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…

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.