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

This post details the implementation of a Cloudflare Worker script that intercepts incoming requests to a specific domain (webhooks.currentdomain.com). The script checks a Workers KV store (WEBHOOK_SETTINGS) to determine if a particular webhook endpoint (identified by its path) should be redirected. If enabled in KV, the Worker creates a new Request object with a modified hostname (webhooks.newinfrastructure.com) and forwards the request to the new infrastructure. If not enabled, the request is forwarded to the original infrastructure. The post also discusses debugging exceptions using Loggly and resolving 403 errors caused by IIS rate limiting by implementing Cloudflare Rate Limiting.