Java 17, the first LTS release in three years, brings 14 new JEPs, a free Oracle JDK license, and performance gains demonstrated by OptaPlanner benchmarks that show up to 8.66% faster than Java 11, prompting developers to consider upgrading from older versions.
The article explains Java 17’s release as the first LTS since Java 11, details Oracle’s new free JDK license, and presents a thorough OptaPlanner benchmark that compares JDK 11, 16, and 17 using G1GC and ParallelGC, revealing performance gains and guiding upgrade decisions.
TencentKona 8.0.4 introduces an SM2/SM3/SM4 JCE provider for Chinese national cryptographic algorithms, parallel G1 Full GC, parallel heap inspection, and various performance enhancements, all demonstrated with a micro‑service encryption example and detailed curl commands for practical use.
This guide explains how to configure JVM options to capture GC logs, use GCViewer to interpret Parallel, G1, and CMS collector logs, decode each log field, and apply concrete tuning parameters to improve pause times and overall application throughput.
