Database Insights

Eliminate stale cache reads and thundering-herd stampedes by streaming MySQL binlog changes to Valkey via Debezium CDC. Full Java setup with embedded engine and XFetch.

Use PostgreSQL range types (daterange, tstzrange) and exclusion constraints to prevent overlapping bookings and schedules. Includes room booking, multirange types, and GiST index examples.

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.

Configure pgAudit for PostgreSQL SOC2, PCI-DSS, and HIPAA compliance. Covers session vs object auditing, log format, log volume management, and SIEM integration.

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

Migrate from MySQL to PostgreSQL using pgLoader. Covers schema differences, type casting, application code changes, validation, and zero-downtime migration strategies.

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.

Set up PostgreSQL monitoring with Prometheus and postgres_exporter. Includes install steps, critical alert rules, Grafana dashboard panels, and custom query metrics.