Fast and Distroless Java in Containers: the Recipe!
summary
Shows how to build tiny, faster Java containers by combining Eclipse OpenJ9 (drop‑in JVM), distroless base images, and jlink custom runtimes. Claims: OpenJ9 cuts startup time ~40%, reduces steady‑state heap ~66% and uses ~63% less memory during ramp‑up versus HotSpot. Demonstrates creating multi‑stage Dockerfiles that produce images as small as ~15–120 MB (hello‑world to Spring Boot examples), and explains class data sharing, AOT caching and returning unused pages to the OS.
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chapters (6)
- 0:00Java in containers basics
- 1:53JVM container awareness
- 5:57Eclipse OpenJ9 for the cloud
- 15:38Performance benchmarks
- 18:07Optimizing docker image sizes
- 26:06Building custom base images
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