Blue / Green Deployments for Cloudflare Workers
We all know it can be a lot of stress to update a running production application and blue/green deployments can go a long ways to reducing that stress. We’ve been playing with implementing blue/green releases for our Cloudflare Workers and are pretty excited about the results.
Blue/Green deployments let us get a new version up and running before we ever send production traffic to it. When we’re ready we can route a small amount of traffic (Canary release) to the new backend and then slowly increase the traffic until it’s all been shifted over. Alternatively we can run an A/B test between the two backends.
We just published an example repo implementing blue/green deployments for Cloudflare workers. It features:
Blue / Green workers
Proxy worker implementing Canary releasing and A/B testing
Optional release versioning and history with AWS S3 bucket
Infrastructure as code - deployed with Terraform (you just need to manually point your nameservers at Cloudflare) - nothing is done through the Cloudflare UI
Convenient bash scripts for deploying
You can read more over at the repo: https://github.com/DigitalOptimizationGroup/blue-green-cloudflare-workers
Let us know if it’s useful for you.