Database Insights

Configure auto_explain to automatically log EXPLAIN output for slow PostgreSQL queries. Covers log_analyze, log_buffers, sample_rate, JSON format, and RDS setup.

Use hypopg to test how a new PostgreSQL index would affect query plans before building it. Includes install, hypothetical index creation, EXPLAIN workflow, and index sizing.

Master PostgreSQL window functions: ROW_NUMBER, RANK, SUM OVER, LAG/LEAD, moving averages, and frame clauses. Real SQL examples for analytics and reporting queries.

Understand how PostgreSQL TOAST stores large columns, diagnose TOAST bloat with SQL, choose the right storage strategy, and use LZ4 compression in PG14+.

Learn how to use pgBadger to analyze PostgreSQL logs, find slow queries, and automate daily reporting. Includes postgresql.conf setup, cron automation, and RDS tips.

Use PostgreSQL tablespaces to distribute tables and indexes across NVMe, SSD, and archive storage. Covers creation, ALTER TABLE SET TABLESPACE, monitoring, and backup.

Size and configure the InnoDB buffer pool correctly to maximize cache hit ratios and minimize disk I/O

Measure PostgreSQL table and index bloat, then use pg_repack to reclaim space with zero downtime

Fine-tune PostgreSQL autovacuum to eliminate dead tuples, prevent table bloat, and maintain query performance

Use MySQL Performance Schema to profile queries, monitor memory, and diagnose bottlenecks without guesswork