The JusDB Database Engineering Blog

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.

Authenticate to RDS and Aurora using IAM credentials instead of passwords. Eliminates long-lived passwords with 15-minute token-based access. Covers PostgreSQL and MySQL setup.

A measurement-led guide to RDS and Aurora cost control: right-size safely, cover steady usage, govern storage, schedule idle systems, and verify each change.

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.

Aurora PostgreSQL offers sub-30-second failover and 15 read replicas but costs more per instance and adds per-I/O pricing. Learn when Aurora's HA wins over RDS simplicity with real cost modeling for 2025.

mysqld_exporter exposes 300+ MySQL metrics for Prometheus. Learn to deploy it, configure essential alerting rules for connection saturation and replication lag, and build production dashboards in Grafana.

AWS RDS, Aurora, and Aurora Serverless v2 all run MySQL and PostgreSQL — but their pricing models differ dramatically. Learn when to use each and how to avoid expensive I/O surprises.

A production guide to AWS Database Migration Service — replication instance sizing, endpoint configuration, Full Load vs CDC vs Full Load+CDC modes, performance tuning, and DMS vs Debezium vs pglogical.

Master AWS RDS connection limits for MySQL and PostgreSQL. Learn max_connections calculation, connection pooling strategies, and optimization techniques.

A production guide to Amazon Aurora PostgreSQL — the shared storage architecture, fast failover mechanics, Aurora Serverless v2 ACU scaling, Global Database, Parallel Query, and an honest comparison against standard RDS.

A production guide to AWS RDS Proxy — how it works, when to use it, IAM authentication setup, and the connection pool sizing rules that prevent Lambda-induced database overload.

Reduce AWS RDS MySQL costs by 40-60% with proven optimization strategies. Learn Reserved Instance planning, right-sizing, storage optimization, and read replica strategies.