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

Every three months your production JDKs fall further behind on security patches. Azul closes that gap today with the July 2026 quarterly …

Jul 23, 2026 Luqman Saeed

Azul Payara's July 2026 release: Server and Micro 7.2.0, Jakarta EE 11, and a brute force security fix across every supported line.

Every production application carries secrets: database passwords, API tokens, encryption keys. The question is never whether to manage them …

As part of my 2026 learning goals around Java on RISC-V (see this post about x86 versus ARM versus RISC-V), I've asked various suppliers to …

What makes a process a good candidate for durability? To answer this, we'll take the canonical Spring PetClinic and interrogate its sources.

Jul 17, 2026 Shai Almog

ParparVM went from 4.21x slower than warmed Java 25 to geomean parity, with six of ten benchmarks at or below HotSpot and peak memory below …

Autoscaling on Kubernetes has evolved significantly, but many production systems still rely on reactive scaling based on CPU and memory …

The incident that taught me to respect pinning looked like nothing. A service freshly migrated to virtual threads, a load test that …

BoxLang 1.15.0 is a high-impact release with two big headlines and a long tail of hardening. The first headline is a massive performance …

Jul 14, 2026 Bruno Borges

I built an extension to collapse the entire loop of running and measuring the performance of Java workloads, so it can be used within a …