This article details how the Industrial and Commercial Bank of China's software development center tackled Jenkins performance bottlenecks by upgrading hardware, switching to OpenJ9 JVM, and implementing Docker‑Swarm load balancing, ultimately boosting build capacity from a few thousand to over thirty‑six thousand daily jobs.
Phoronix benchmarked OpenJDK versions 8 through 19 alongside OpenJ9 and GraalVM CE on an Intel Core i5‑12600K Ubuntu 22.04 system, revealing varied performance across SciMark, matrix multiplication, LU decomposition, DaCapo, Renaissance, and other tests, with OpenJDK 18/19 often leading in overall scores.
This article explains the advantages of AdoptOpenJDK—including its open‑source nature, multiple VM options, strong community testing, easy installation via package managers, and massive download numbers—making it a reliable, compliant, and cost‑free Java runtime for modern development.
This article demonstrates how Java applications can be made smaller, faster to start, and more resource‑efficient in the cloud‑native era by using multi‑stage Docker builds, OpenJ9’s shared class cache and AOT compilation, and GraalVM native images, with step‑by‑step examples based on the Spring PetClinic and Micronaut projects.
This article explores why Java faces challenges in the cloud‑native era, demonstrates how multi‑stage Docker builds, OpenJ9 shared class cache, and Micronaut‑GraalVM native compilation can dramatically reduce image size and cut startup time by up to 50 % while also lowering memory consumption.
