Zero Downtime

During a rolling deploy, new HTML can ask an old server for files it doesn’t have. Fix it in Django with shared storage and a CDN for zero-downtime deploys.

Preventing downtime during deployments is crucial for maintaining service availability and ensuring a positive user experience. Blue-green deployments have emerged as a popular strategy to achieve this goal. However, they introduce challenges, especially when dealing with database changes. This article delves into what blue-green deployments are, why database changes can be tricky in this context, and how to navigate common change scenarios effectively in Django. Blue-Green Deployments A blue-green deployment is a release management strategy that utilizes two separate production environments called “blue” and “green”. At any given time, only one environment is live, serving all production traffic. Changes are deployed to green, and after thorough testing, traffic is switched over from the blue to green. This approach minimizes downtime and provides a quick rollback option by reverting traffic to blue if issues occur. ...