Welcome to GraphQL
summary
Quick primer on GraphQL covering the actual pieces: the October 2021 spec, the execution runtime that maps schema types to resolvers, and the query language with queries mutations and subscriptions. Notes adoption evidence: GraphQL Foundation under the Linux Foundation, widespread company use and meetups, strong tooling because of introspectible schema, and common pairing with React. Practical implications include a single endpoint, language-agnostic resolvers, and when to lock down introspection for public APIs.
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