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2025-04-02
New Write Barriers for G1
The Garbage First (G1) collector’s throughput sometimes trails that of other HotSpot VM collectors - by up to 20% (e.g. JDK-8253230 or JDK-8132937). The difference is caused by G1’s principle to be a garbage collector that balances latency and throughput and tries to meet a pause time goal. A large part of that can be attributed to the synchronization of the garbage collector with the application necessary for correct operation. With JDK-8340827 we substantially redesign how this synchronization works for much less impact on throughput. This post explains these fairly fundamental changes.
Optimized a Java function & cut production CPU from >90% to 70%
My very first project at my current company was to migrate a system written in PHP to Java. There is one function that plays an important role in the system. It performs the following tasks:
2025-04-01
Resource Injection in Java
The technique of resource injection allows injecting various resource available in the JNDI (Java Naming and Directory Interface) namespace into any container-managed object, such as a servlet, a…
Why are Java Generics not reified?
Hello World, Java generics are powerful, but have you ever wondered why they aren’t reified? Why can’t you do instanceOf a list or create a new "T"? It all g...
Specifications in Jakarta Data
Several people have recently asked me how to do "specifications" in Hibernate or in Jakarta Data. I believe this idea comes from Spring Data, where a repository method may be passed a function that applies programmatic restrictions to the query result via the JPA Criteria API.
Novedades de java 22
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