GraalVM for Java developers
summary
GraalVM replaces the HotSpot top-tier JIT via JVMCI Graal compiler to run JVM languages and also executes JavaScript, Python, Ruby and LLVM bitcode with Truffle, and offers GraalVM native-image AOT compilation that yields millisecond startup (typical web service <20 ms) and low memory. A Reactor microbenchmark demo shows 30× faster Reactor demo results on stage; Renaissance suites show Community Edition ~1% faster on average versus OpenJDK while Enterprise is consistently faster. Native-image requires reflection/JNI/proxy config but a Java agent can auto-generate it; Spring support is improving but often needs tweaks.
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chapters (30)
- 0:00Introduction
- 1:42What is it
- 5:36What does it offer
- 9:05Architecture
- 12:58Truffle Framework
- 18:07Builds
- 19:18Oracle support
- 20:01Performance demo
- 27:15Renaissance benchmark
- 30:01Java performance
- 31:04Open JDK
- 31:59Experimental VM
- 32:18Math benchmarks
- 33:39Open JDK benchmarks
- 34:14Twitter
- 34:54Ground AM19
- 35:39Polygons
- 35:51Spring example
- 38:33Java types
- 39:33JavaScript compatibility
- 40:03Performance
- 41:32Python
- 42:17Tools
- 43:41What you get
- 44:41Native images
- 45:31Reflection
- 46:32Assisted Configuration
- 47:24Test Results
- 48:11Spring Applications
- 49:25Windows Java 11
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