PostgreSQL uses different types of WAL records for recording activities happening on the database. A deeper understanding of what they are, how they are synchronized, what the optimization opportunities are, etc., can lead to a better-tuned system.
This talk also discusses the different sets of PostgreSQL parameters and their impact on WAL and optimization considerations for a high-performance database.
This talk covers:
- What the WAL records are
- Synchronization considerations
- What is important from the host IO subsystem
- Parameters for tuning
- Different levels of tuning, Instance, Database, User, Session, and Transaction,
and how it impacts performance. - WAL Propagation to standby
- Synchronous standby, important points to be considered
- Remote write, flush, and replay stages.
This talk also includes small code snippets, demonstrations, and efficiency comparisons.
Video Stream