GraalVM, CRaC, Leyden and friends - in search of TRULY...
summary
GraalVM AOT and native-image, Project Leyden’s split pipeline (compile time, CDS generation, link time, runtime) and CRaC snapshots are presented as practical ways to cut cold starts: GraalVM ahead-of-time native-image hits roughly 80% of JIT peak performance, Galahad brings Graal into the JDK, and CRaC snapshots in AWS Lambda (SnapStart) restore preinitialized JVMs but require fixes like secure-random handling. Real-world telemetry shows only about one third of deployments set container JVM flags correctly, so CDS/ADB and Leyden pipelines matter.
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chapters (8)
- 0:00Introduction and speaker intro
- 3:00Cloud native Java definition
- 13:22Java standards and frameworks
- 17:56Cold start problem in Java
- 22:11GraalVM explained
- 30:06Other JVM runtime optimizations
- 37:58Project Leyden overview
- 41:54JDK 21 features and conclusion
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