Beyond JVM: How the Platform is Evolving for new Languages & Features
summary
JRuby 9000 accumulates ~29,000 commits to bring Ruby to the JVM and shows concrete wins: switching to invokedynamic removes intermediate dispatch and yields roughly 4–5× speedups on method-heavy code; JNR provides a Java FFI that is about an order of magnitude faster than JNA and makes calls like getpid and POSIX I/O straightforward; Project Panama (JEP 191) targets native-call performance and safe memory layouts; Truffle + Graal eliminates many allocations and delivers up to ~20× faster Ruby by overcoming HotSpot escape analysis limits.
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chapters (9)
- 0:00Intro
- 4:13Basic Primitives
- 6:11Invoke Dynamic
- 10:56Invoke Dynamic Explained
- 19:57Whats Next
- 22:39JNI
- 24:59JNR
- 34:36Ruby
- 39:37Truffle
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