BlauGrünDeployments
BlauGrünDeployments is a software release technique in which two production environments, Blau and Grün, are maintained in parallel. Live user traffic is directed to one environment while the other hosts the updated version. After verification, traffic is switched to Grün, and Blau becomes the standby for the next release. If issues arise, traffic can be switched back for a fast rollback.
Implementation requires two identical production environments, a traffic-routing mechanism, and an automated CI/CD pipeline. Steps: deploy
Benefits include near-zero downtime, faster rollback, and reduced release risk since production-like testing occurs in the
Challenges include data synchronization for stateful applications, database migration handling, and ensuring environment parity. Maintaining two
Variants include DNS-based cutover, which swaps traffic at the domain level, and load-balancer-based cutover, which allows
Typical use cases include high-availability services, regulated industries with uptime requirements, e-commerce platforms during launches, and