Edge Functions Explained
summary
Demo shows a working JWT authentication demo implemented as middleware that runs one layer closer to users on Vercel’s edge, returning noticeably lower latency than origin routes. Code compiles to constrained runtimes (Web APIs only) so reusable logic ships as ES modules; examples include middleware as reusable packages for IP blocking and rate limiting wired to a global store. Configuration currently relies on external services like Upstash redis REST API and eventual consistency tradeoffs are explicit.
AI-written summary · about
chapters (10)
- 0:00Introduction to edge compute
- 1:04Why move logic to the edge?
- 3:21Middleware and abstractions
- 6:21Defining infrastructure as code
- 8:30The role of centralized systems
- 10:51Edge authentication demo
- 14:41Managing global state
- 17:08Reusability and performance
- 20:42The future of data at the edge
- 24:59The web's operating system
