Upgrading Cloud Infrastructure Made Easier and Safer Using Cloudflare Workers and Workers KV

What this post added

This post details how Cloudflare Workers and Workers KV were used to perform a phased migration of webhooks from legacy Azure services to a modern PaaS offering. The Worker script dynamically routed requests based on path and feature flags stored in Workers KV, allowing for granular control over traffic migration endpoint by endpoint. This approach mitigated the risks associated with traditional DNS-based migrations and provided a flexible mechanism for enabling/disabling traffic to new infrastructure. The post also highlights the use of Loggly for debugging exceptions and the implementation of Cloudflare Rate Limiting to handle 403 errors from the origin.