JIT

Definitions

1. Just-In-Time compilation — a technique where bytecode is compiled to native machine code at runtime rather than ahead of time, allowing optimizations based on actual usage patterns.

   In plain English: Instead of translating your code to machine language before running it, JIT does it on the fly, making hot paths faster the more they run.

   Example: "The JIT compiler noticed that loop ran a million times and optimized it down to raw assembly."

Related Terms

• Assembler
• .NET
• JVM
• Pragma
• Tail Call Optimization
• V8 Isolate
• WASI
• Garbage Collection Pause
• JIT Compilation
• AOT Compilation
• Bytecode
• ARM Architecture
• Array Buffer
• Profile Guided Optimization
• Code Performance