---
title: "Just-in-Time Compilation (JIT)"
id: jit
pg_version: "20devel"
---

<a id="jit"></a>

# Just-in-Time Compilation (JIT)

## Table of Contents

- [30.1. What Is JIT compilation?](jit-reason.md)
  - [30.1.1. JIT Accelerated Operations](jit-reason.md#jit-accelerated-operations)
  - [30.1.2. Inlining](jit-reason.md#jit-inlining)
  - [30.1.3. Optimization](jit-reason.md#jit-optimization)
- [30.2. When to JIT?](jit-decision.md)
- [30.3. Configuration](jit-configuration.md)
- [30.4. Extensibility](jit-extensibility.md)
  - [30.4.1. Inlining Support for Extensions](jit-extensibility.md#jit-extensibility-bitcode)
  - [30.4.2. Pluggable JIT Providers](jit-extensibility.md#jit-pluggable)

This chapter explains what just-in-time compilation is, and how it can be configured in PostgreSQL.