Apollo Server is a Node.js framework that allows building GraphQL APIs with ease. It provides a simple way to define schema, resolvers, and queries, making it perfect for fullstack developers. To get started, install dependencies like `apollo-server` and `graphql-tag`, then create an `index.js` file where you'll set up your GraphQL server using tagged template literals or the `schema` object.
This guide explains how to build robust, scalable GraphQL APIs with Apollo Server, covering why Apollo (easy learning, customization, performance), schema design best practices (types, fields, resolvers), implementing queries and mutations, enabling caching and subscriptions, deploying with Express/Koa, documenting and testing with Playground/Studio, plus a social-media example.
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