The Hypersistence Utils library (previously known as Hibernate Types) gives you Spring and Hibernate utilities that can help you get the most out of your data access layer.
The High-Performance Java Persistence book and video course code examples
A Minecraft: Java Edition launcher, based on PojavLauncher
Distributed microservices architecture with OpenTelemetry tracing, Kafka messaging, and auto/manual instrumentation, visualized in Uptrace.