#Java
Sep 26, 2026
JIT Compilation Internals: Deoptimization, Inline Caching, and Sea-of-Nodes Architecture Guide
A deep runtime systems guide to Just-In-Time (JIT) compilers: how V8 TurboFan, JVM HotSpot, and LuaJIT achieve near-C performance in dynamic languages using speculative optimization, inline caching (monomorphic/polymorphic), escape analysis, on-stack replacement (OSR), and Sea-of-Nodes intermediate representations.