Write An Apache Kafka Custom Partitioner 1. Implement the Partitioner interface from Apache Kafka Java API. 2. Register the partitioner with the Producer

The “Composition over inheritance” debate is seemingly never ending.

When we talk about Java, we talk about two things: the JVM (Java Virtual Machine) and the Java bytecode that runs on this machine.

The JVM internals are quite sophisticated, but it’s important to understand what they consist of, what parts are responsible…

⏩ There's a follow-up available for this post: Resilient use cases: fewer Exceptions, more Results.

What are Kotlin Exceptions and how should you use them?

Result for Kotlin. GitHub Gist: instantly share code, notes, and snippets.

Talk by Dr. Neil Gunther at DSConf 2019.

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About Dr. Gunther
Neil Gunther is a computer information systems researcher best known internationally for developing the open-source performance modeling software Pretty Damn Quick and developing the Guerrilla…

This article is a part of a series on io_uring Series introductionPart 1: This article.Part 2: Queuing multiple operations: We develop a file copying program, cp_liburing leveraging multiple reques…

Problem Description The Kotlin StdLib contains a function named runCatching. It tries the provided lambda and catches any Throwable that is not caught or thrown by the lambda. However, using runCat...

Articles in this series Part I. Iterative ServersPart II. Forking ServersPart III. Pre-forking ServersPart IV. Threaded ServersPart V. Pre-threaded ServersPart VI: poll-based serverPart VII: epoll-…

Fetching heap dumps from a Spring Boot service running on Kubernetes is not as hard as you might think. We show you how it is done.

Why setting CPU limits can slow response-time and what to do about it.

What is CPU Throttling

No one lacks an opinion when it comes to CPU limits. Are they a mandatory requirement or a misunderstood evil? Most cloud providers tell you to set them, yet members of the original Kubernetes team at Google say not to use them! Why all the debate about something…

Learn about the differences between the CPU Manager's policies and get recommendations for specifying CPU requests and limits.

“Sir, your application is continually getting throttled,” I repeated. The highly skilled team that I was brought in to help with an outage was in disbelief. They had been using the same limits configuration in production for over two years. Yet, the Grafana…

I’ve bumped into consistent hashing a couple of times lately. The paper that introduced the idea (Consistent Hashing and Random Trees: Distributed Caching Protocols for Relieving Hot Spots on the World Wide Web by David Karger et al) appeared ten years ago…

Monolith by Rene Aigner Some patterns are just about the code. If your code looks like this, and you need it to do that, here’s what to do. You’d do well to study such patterns, as they give you a …

I/O multiplexing is doing I/O with many sources and giving good response. I/O multiplexing is explained with select, poll and epoll calls.