# Chapter 30. Reliability and the Write-Ahead Log

Table of Contents

30.1. Reliability

30.2. Data Checksums

30.2.1. Off-line Enabling of Checksums

30.3. Write-Ahead Logging (WAL)

30.4. Asynchronous Commit

30.5. WAL Configuration

30.6. WAL Internals

This chapter explains how the Write-Ahead Log is used to obtain efficient, reliable operation.