Chapter 28. Reliability and the Write-Ahead Log

Table of Contents
28.1. Reliability
28.2. Write-Ahead Logging (WAL)
28.3. Asynchronous Commit
28.4. WAL Configuration
28.5. WAL Internals
28.6. Barrier

Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly.

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