Introduction

Serverless and edge give you scale-to-zero and low latency without managing servers. The catch is designing for statelessness, cold starts, and provider limits. We share patterns that work across AWS, Cloudflare, Vercel, and similar platforms.

API and Auth Patterns

REST and GraphQL at the edge
We cover routing, validation, and error handling so your API stays consistent and observable. Caching and cache invalidation are key; we outline strategies.

Auth and sessions
JWTs and session tokens work well with edge; we discuss where to validate, how to refresh, and how to avoid storing secrets in edge config.

State and Data

KV and databases
Edge KV, serverless DBs, and connection pooling from edge workers let you add state without losing edge benefits. We compare options and when to use regional vs. edge data.

Queues and async
For heavy or long-running work, we show how to offload from edge to queues and workers so response times stay low and reliability stays high.