Database Insights

Configure the MySQL slow query log and analyze it with pt-query-digest to find top offenders by total time. Includes EXPLAIN diagnosis and performance_schema alternative.

Master database index design: composite index column order, covering indexes with INCLUDE, partial indexes for filtered queries, functional indexes, and unused index auditing.

Implement MySQL table partitioning with RANGE and HASH strategies. Covers instant partition drops for data lifecycle, partition pruning verification, and key gotchas.

Explore PostgreSQL 18 revolutionary features including async I/O, improved parallelism, enhanced JSON support, and developer experience improvements coming in 2025.

Tune autovacuum for high-churn PostgreSQL tables. Lower scale factors, monitor dead tuple accumulation, detect wraparound risk, and use pg_stat_progress_vacuum.

Measure and reclaim PostgreSQL index bloat using pgstatindex and REINDEX CONCURRENTLY. Learn safe online index rebuilding and autovacuum tuning to prevent future bloat.

PostgreSQL offers multiple index types for different access patterns — and choosing wrong means slow queries or wasted space. A comprehensive guide to indexing strategy, from type selection to monitoring and maintenance.

Redis 8 and Valkey 8 both launched in 2025 with competing performance claims. They differ on licensing, governance, and roadmap. Here is how to choose for production.

Master MySQL performance optimization with this comprehensive 2025 guide. Learn expert techniques for query tuning, indexing strategies, memory configuration, and InnoDB optimization to achieve 10x database performance improvements.

MySQL 8.4 LTS introduces production-optimized InnoDB defaults out of the box. Learn new default values, performance implications, and upgrade considerations.

Leverage MySQL 8.4 InnoDB parallel DDL for faster schema changes. Learn parallel index creation, online DDL improvements, and reduced maintenance windows.

PostgreSQL's pg_stat_activity view exposes every connection's state — but understanding what 'idle in transaction' means and why it's dangerous requires knowing the full lifecycle of a PostgreSQL backend process.