JIT Compiler

Definitions

1. A just-in-time compiler that translates code into native machine instructions during program execution instead of ahead of time. JITs watch running code, identify hot paths, and apply runtime-specific optimizations that static compilers cannot always make.

   In plain English: It is a compiler that turns code into fast machine instructions while the program is already running.

   Example: "The first few requests are slower until the JIT compiler warms up and optimizes the hot methods."

Related Terms

• Monkeypatching
• Greenthread
• Formal Grammar
• Lookahead
• Loop Unrolling
• Object File
• Reflection
• Reflective Programming
• Scope Resolution
• String Pool
• Unrolling
• Code Performance