Using pg_stat_statements and pg_buffercache
Leverage powerful extensions like `pg_stat_statements` and `pg_buffercache` for deep performance insights.
PostgreSQL Extensions: Power-Ups
PostgreSQL is incredibly powerful, and its functionality can be extended even further using extensions.
Extensions are modules that add new functions, data types, operators, and more to your database. They're like plugins that enhance your database's capabilities without modifying its core code.
In this lesson, we'll explore two crucial extensions for performance monitoring: pg_stat_statements and pg_buffercache.
Meet pg_stat_statements: Query Profiler
pg_stat_statements is an invaluable tool for understanding your database's workload. It tracks execution statistics for all SQL statements executed by the server.
This extension helps you identify:
- Which queries are run most frequently.
- Which queries consume the most total time.
- Queries with high average execution times.
- Queries that read/write a lot of disk blocks.
It's your go-to for pinpointing performance bottlenecks at the query level.
All lessons in this course
- Using pg_stat_statements and pg_buffercache
- Logging Configuration for Analysis
- External Monitoring Tools Integration
- Diagnosing Live Activity with pg_stat_activity