Programmer DD

Jun 4, 2025 · Backend Development

How a Spring Boot Upgrade Cut Our AWS Bill by 45%

Facing a soaring AWS bill despite stable traffic, we traced the cost to over‑provisioned EC2 instances and leaking database connections, then upgraded to Spring Boot 3.5 and applied targeted pool, transaction, and JPA tweaks, achieving a 45% reduction in monthly spend while boosting performance and reliability.