Deep dive into Blue-Green Deployment — zero-downtime releases, instant rollback, Kubernetes implementation, database migration compatibility (expand-contract), CI/CD pipeline integration, and comparison with canary and rolling updates.
Comprehensive guide to eliminating transient 502 Bad Gateway and Connection Reset errors during rolling updates and HPA scale-in using Kubernetes Pod Termination Lifecycle, preStop hooks, and Spring Boot 3 graceful shutdown.
Managing database schema changes safely in production — Flyway, Liquibase, zero-downtime migration patterns, and rollback strategies.
