Expand your Ruby Potential with JRuby
summary
JRuby runs Ruby on the JVM with concrete wins: 26x faster allocation than CRuby in benchmarks and base object sizes reduced from 32 to 24 bytes (with a 16‑byte JVM trick), plus full-featured GC that scales to terabyte heaps. Threads are 100% parallel, yielding far better CPU utilization than CRuby (threads ~60% gain, ractors ~3.7x on the demo). Real users include Logstash, Poshmark and Cami; Warbler packages apps into single JARs; Java libs, FFI and WebAssembly integrate with no Java coding.
AI-written summary · about
chapters (13)
- 0:00Introduction
- 1:28JRuby community support
- 3:58Origins of JRuby
- 6:46Why JRuby opportunities
- 8:10Performance optimizations
- 13:03Benchmarking runtimes
- 15:53Concurrency benefits
- 19:29Poshmark use case
- 20:12JVM ecosystem leverage
- 23:19Library integration
- 24:00Warbler deployment
- 25:48Creative applications and games
- 26:50Future JRuby plans
