Let's review the observability and runtime changes coming in Java 26.

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Java 26, scheduled for release on March 17th, brings several runtime and observability improvements relevant to DevOps. Key changes include AOT Object Caching extended to ZGC users, multiple G1 GC enhancements (5-15% throughput improvement via reduced synchronization, eager humongous object reclamation, GC overhead limit enforcement, and Transparent Huge Pages fix), JVM flag updates (InitialRAMPercentage default set to 0, deprecation of AggressiveHeap, MaxRAM, and server/client flags), JMX API additions (new getTotalGcCpuTime() method, stricter JMXServiceURL protocol handling), C2 JIT support for methods with more than 30 parameters, and Serial GC eden space reordering to reduce premature OutOfMemoryExceptions.

Java 26 for DevOps – Inside.java