topic / jit-compilation

JIT Compilation

Follow hot runtime code as it becomes optimized machine code.

Understand profiling, speculative assumptions, deoptimization, inline caches, code generation, and the trade-off between startup and steady-state speed.

1 article · 1 video · 1 trace · 1 request flow · 1 interview · 5 total

Articles

jit compilationSep 25, 2026

When a Runtime Compiles Hot Code

A just-in-time compiler translates code while a program runs.

5 min readRead

Request Flows

request flow · 5 stagesHow When a Runtime Compiles Hot Code worksAn interactive concept flow for when a runtime compiles hot code, from its assumptions through the main operation and boundary checks.

Videos

In production

jit compilationSep 25, 2026

Video lesson: When a Runtime Compiles Hot Code

Recording brief and narration plan for a visual lesson on when a runtime compiles hot code.

Details

Traces

trace 01 · runtimeTrace: When a Runtime Compiles Hot CodeFollow the key state changes and boundary checks involved in when a runtime compiles hot code.

Interviews

medium · t2Explain When a Runtime Compiles Hot CodeExplain the model, execution steps, complexity, and limits of when a runtime compiles hot code.

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programming language internals

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