Blue Green Deployments
Blue Green Deployments is a software release strategy that involves maintaining two identical production environments, called 'blue' and 'green'. At any time, one environment (e.g., blue) serves live traffic while the other (e.g., green) is idle or used for testing new versions. This allows for zero-downtime deployments and easy rollbacks by switching traffic between environments.
Developers should use Blue Green Deployments when they need to minimize downtime and risk during software releases, such as in high-availability applications like e-commerce sites or financial services. It's particularly useful for continuous delivery pipelines, enabling safe testing of new features in a production-like setting before going live, and providing a quick fallback if issues arise.