Zero‑Downtime Migration to AWS Aurora MySQL
Phased migration from self‑managed MySQL to Aurora with automated provisioning and idempotent imports.
Challenge
A healthcare platform needed Aurora scalability and resilience but feared downtime during migration.
Solution
- Designed phased migration with read replicas and validation
- Automated schemas/users via Terraform + Parameter Store
- Built reusable IaC modules for network and DB resources
- Parallelized dumps/imports with rollback strategies
Impact
- Near‑zero downtime during cutover
- Simplified environment management across DEV→PROD
- Reduced DB operational overhead by ~40%