Optimization isn't a single measurement and a fix. It's whack-a-mole: find the loudest problem, fix it, then look at what the problem was hiding. Jonathan Vogel's second installment in his Java performance series shows this process live, with JFR recordings and flame graphs - including a contention bug that was completely invisible until he pushed the concurrency high enough for it to matter.
DoytoQuery's author published a performance comparison against a number of data access frameworks, and it came out well - which isn't surprising, given that its author wrote the framework. They're deservedly proud of their work, and DoytoQuery has some interesting concepts in how it works, and may be worth further investigation, although there's a documentation gap and, as with most data access frameworks, an impedance mismatch.
OpenJDK leet koda Hanz Franz MacNamaramara told ByteCode.News today that the new structured concurrency implementation in the JVM was being rewritten in Python, using the most current AI modeling available.
Piotr Minkowski's new article on Spring Kafka offset behavior ("Deep Dive into Kafka Offset Commit with Spring Boot") goes into how Spring's Kafka reader commits read offsets: it treats the read operation as a committable transaction, which means your code needs to be aware of the offset write semantics to make sure you don't lose messages. Kafka is powerful precisely because it's not a simple queue - messages can be replayed via offset manipulation - but that same model means offset commit semantics matter in ways they never would with a fire-and-forget message broker.
Mirko Caserta has released Bruce 2.0, a library that wraps JCA with a clean API. Bruce takes the agony of all the nuts and bolts of security and, well, fixes it. Security libraries earn trust slowly and should - this is not the domain where "looks good to me" is sufficient due diligence, but the reduced API surface might be a good thing for the normative case.
The OpenJDK team has released Java 26 - a non-LTS release, but one that supports some important language and API updates, along with some potentially useful ahead-of-time updates for garbage collection and runtime caching. Language updates include progress towards making final mean final - at last - and adding HTTP3 and QUIC support.
JohannaWeb's Project Falcon is a Discord-style desktop client built on top of the Bluesky AT Protocol. The concept is: what if Discord's UX wrapped a decentralized social graph instead of a proprietary one? Built by one person, it's an impressive piece of work.
For Java, JEP 8357464, Enhanced Local Variable Declarations , is an extension of JEP 441, Pattern Matching for switch . It provides local declarations and value extraction in strongly-typed code. JEP...
In a number of applications I work with, I use JSON everywhere, as a sort of lingua franca. I typically do this with Jackson, and with Spring Boot 4's primary use of Jackson 3, it hit me that I might...
In F-Bounded Polymorphism: Type-Safe Builders in Java , author fbounded addresses what he calls a fundamental inheritance problem in Java's fluent builder pattern. When a base builder class returns...
Chances are, if you're reading this, you're seeing an HTML site that looks... primitive. Maybe even wonky. That's because the only site deployed right now (early March, 2026) is a reference UI and is...
This is a site that is built around information - information aquisition (ingress) and information dispensation (egress). It's connected to IRC on Libera.chat as nevet, on two Discord guilds, and on...