A Rails Developer’s Guide To The Ruby VM
summary
Explains how Ruby source moves from characters to tokens to AST to bytecode and back to execution, using Ripper for token/AST inspection and RubyVM::InstructionSequence to view compiled bytecode; notes the compiler appears in 1.9 and YARV (merged 2007) runs a stack‑based VM with two stacks (internal and control frame). Demonstrates two scopes producing two bytecode chunks, asserts identical source yields identical bytecode, and names MJIT, YJIT (Ruby 3.1), and bootsnap caching as practical tools.
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chapters (4)
- 0:00Start
- 0:49Compiled vs. Interpreted
- 8:543. Compile
- 25:34The Ruby execution process involves both compilation and interpretation.
