Using pg_stat_statements to Optimize Queries

The text discusses the use of pg_stat_statements, a popular PostgreSQL extension that records information about running queries, to optimize queries in Timescale services. It explains how this tool can help identify problematic or slow Postgres queries and provides insight into database performance. The text also covers how to query pg_stat_statements in Timescale and highlights the importance of filtering data by userid for security purposes. Additionally, it offers tips on identifying long-running PostgreSQL queries, improving Hit Cache Ratio, and finding queries with high standard deviation.