The JusDB Database Engineering Blog

A comprehensive guide to optimizing AWS RDS MySQL performance through infrastructure tuning, parameter configuration, and query optimization

PgBouncer is the most widely deployed PostgreSQL connection pooler — lightweight, battle-tested, and straightforward to configure. Here's how to get it running in production.

ProxySQL's read/write splitting routes SELECT queries to replicas and writes to the primary automatically — but getting the configuration right requires understanding hostgroups, query rules, and lag-aware routing.

ProxySQL maintains a rich internal stats schema that most teams never fully explore. Here's how to use ProxySQL's built-in monitoring to track query latency, backend health, and connection pool utilization.

PgPool-II provides connection pooling, read/write splitting, and automatic failover for PostgreSQL — but its extensive configuration can be overwhelming. Here's a practical guide to getting PgPool-II running in production.

Discover how jemalloc, tcmalloc, and mimalloc can dramatically improve MySQL memory management. Real benchmarks showing 2-4x performance improvements and memory leak prevention.