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Friends of OpenJDK Today

foojay is a place for friends of OpenJDK, providing free, reference materials and blogs for daily Java usage.

Exploring how to profile and benchmark Java code using JMH and Async profiler.

One of the discussions that always leaves me with both doubts and excitement is the one about system architecture.

Recently Azul announced that AVD makes it possible to identify vulnerable components on a jar file level but also on class file level.

This is the third blog post in a series on faster Java application warmup with ReadyNow. If you haven’t been following the series, go back …

Jun 19, 2025 Luce Carter

In the technological world, the cloud has become more prevalent. It brings many benefits, including flexibility, scalability, faster …

SpringBoot and Kafka Streams – Event Routing & Testing. Build a Kafka Streams app to validate and route Lille city tour!

In this series, I'm focusing on what's old in the JDK, not that known, and can be useful. A few hidden gems in the JDK.

The exhaustive description of common patterns is a huge asset for beginning writers and can help even seasoned ones.

We know that LLMs can and will make mistakes, and while enriching your prompts with the proper context can help align results with your …

Jun 17, 2025 Tim Kelly

MongoDB is built to be fast. The real win comes from knowing how to keep it that way, even as your app grows and your data gets more …