PostgreSQL WAL and Commit Synchronization, Optimization Opportunities - Jobin Augustine

#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.

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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.
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