Database Insights

Five counterintuitive database performance truths every engineer gets wrong — over-indexing costs, N+1 queries, connection pool sizing, replica reads, and EXPLAIN limitations.

RDS MySQL audit logs stored in CloudWatch cost significantly more than S3 — and most teams don't need real-time log access. Here's how to export audit logs to S3 and cut your AWS bill.

MySQL's foreign key implementation has evolved significantly from 5.7 through 8.4 — with changes to metadata locking, instant DDL interactions, and Group Replication behavior that every DBA needs to understand.

MySQL 8.4's audit log filter system lets you capture exactly the events your compliance framework requires — filtering by user, schema, event class, and severity to reduce audit log volume.

MySQL InnoDB Cluster combines Group Replication, MySQL Shell, and MySQL Router into a complete HA solution. Here's how to deploy and manage it in production.

MySQL 8 introduced comprehensive password management — password validation policies, reuse history, expiration, and dual passwords for zero-downtime credential rotation.

Aurora and RDS share the MySQL engine but diverge at the storage layer in ways that produce very different cost and performance profiles — the right choice depends entirely on your I/O pattern.

A detailed comparison of Google Cloud SQL, Amazon RDS, and Azure Database for MySQL and PostgreSQL — HA architecture, failover times, connection pooling, pricing for equivalent instances, and platform-specific features.

MariaDB and MySQL have diverged significantly. This guide compares licensing, Galera vs Group Replication, thread pool, cloud support, and migration paths.

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 8.0 end-of-life is April 2026. Plan your upgrade to MySQL 8.4 LTS now. Learn migration strategies, new features, and compatibility considerations.

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