Continuous deployment automates code releases to production, while blue-green and canary are release strategies that safely manage how users receive those updates.Continuous DeploymentDefinition: A practice where every code change that passes automated tests is sent directly to production without human approval.Goal: Speed up how fast new features and fixes reach users.Requirement: Needs strong automated testing and quick rollback tools to catch bugs fast.
Blue-Green DeploymentsDefinition: A strategy that uses two identical production environments, usually called Blue (current live version) and Green (new version).How it works: You test the new code in the green environment, then switch all user traffic from blue to green at the same time using a load balancer.Benefits: Near-zero downtime and instant rollback if something breaks by pointing traffic back to blue.Drawback: Costs more because you must run two full copies of your infrastructure.
Canary DeploymentsDefinition: A strategy that releases the new version to a very small subset of users or servers before launching it to everyone.How it works: You route a small slice of traffic (like 5%) to the new build, watch for errors or performance issues, and gradually increase the percentage until everyone is on the new version.Benefits: Lowers risk by limiting the impact of hidden bugs to a small group and saves money by not needing a fully duplicated second environment.Drawback: More complex to route traffic and track metrics accurately.If you'd like, I can:Explain how to use feature flags with these strategiesGive an example of a CI/CD pipeline setup
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