Getting started with GraphQL and caching on Next.js + Apollo + Layer0
summary
Converts a REST backend to GraphQL using Next.js, Apollo Server and Apollo Client, hosted on Layer0 by Limelight, and demonstrates edge caching of GraphQL POST responses. Shows route config with a one‑hour TTL, per‑operation cache handlers, and surrogate keys per product so single‑product purges are possible via UI or API. Uses Layer0 devtools to prove misses become hits at the edge and shows the modified cache headers and x0t hit indicator.
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