Edge-Native Webhook Ingress: Running Webhook Gateways on Cloudflare Workers and WebAssembly (Wasm)
A DEV Community article outlines an edge-native approach to webhook ingress using Cloudflare Workers and, where useful, WebAssembly (Wasm). It describes the traditional design in which webhook traffic from providers such as Stripe, GitHub, or Shopify is routed straight into a centralized Kubernetes cluster or cloud region, and states that this design has real security and capacity drawbacks. Because a public webhook endpoint accepts requests from anyone, the article says it is only as safe as its signature verification, and if every request, valid or not, must travel to the origin to be rejected, bursts and floods consume ingress, API gateway, and worker capacity, which can end in connection starvation, resource exhaustion, and cascading failures. The article says moving signature verification, payload checks, and tenant routing to the edge with Cloudflare Workers and Wasm changes this. It cites Cloudflare reporting a network of more than 330 cities, with gateway code running inside it, so bad requests are dropped before reaching the origin and valid events are acknowledged quickly and handed off asynchronously. The article states it walks through the architecture, the code, and the limits to design around.
It describes moving webhook signature verification and routing to the edge so invalid requests are dropped before reaching origin capacity.