How to use a Rust library inside the JVM application
summary
Core Scala optimizer core gets rewritten in Rust and exposed to the JVM via robusta gni and JNI; protobuf messages serialize requests so Java and Rust stay in sync; native binaries for macOS and Linux get bundled into the Scala artifact; Rust panics map to Java exceptions and fallbacks prevent crashes; team runs a shadow run comparing results, fixes about 20 mismatches, and flips traffic only after confidence; system runs over a year in production with no major incidents.
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chapters (5)
- 0:00Start
- 1:28Optimization problems are hard
- 5:01Rewriting takes time
- 14:48Error handling
- 15:11DON'T PANIC
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