https://nalar.dev/tags/deployment/ Recent content in Deployment on Nalar Hugo en-us Tue, 01 Sep 2026 00:00:00 +0700 https://nalar.dev/blue-green-deployments-zero-downtime/ Tue, 01 Sep 2026 00:00:00 +0700 https://nalar.dev/blue-green-deployments-zero-downtime/ <p>A blue-green deployment keeps two production-capable application environments. One serves live traffic while the other receives the new release. After validation, traffic is switched to the candidate environment.</p> <p>The pattern can make rollback fast, but it does not automatically make a release safe. Database changes, background jobs, caches, and external side effects can still make an old version incompatible with the new state.</p> <h2 id="the-basic-release-sequence">The basic release sequence</h2> <p>Assume <strong>blue</strong> is currently live and <strong>green</strong> will run the new version.</p>