Blue-green deployments are a strategy used in software deployment to minimize downtime and reduce risk. The approach involves having two identical production environments, labeled 'blue' and 'green'. One environment is live and serving traffic, while the other is idle. When a new version of the software is ready to be deployed, it is deployed to the idle environment. After verifying that the new version is working correctly, traffic is routed to the updated environment, making it live. This technique allows for quick rollback if issues arise with the new version, as traffic can be easily routed back to the previous version.
Key Takeaways
Blue-green deployments involve two identical production environments
Minimizes downtime and reduces risk by allowing quick rollback
Traffic is routed to the updated environment after verification
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