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GraphQL API Development
Schemas, Queries, Mutations, Resolvers, Pagination, the N+1 Problem, Authorization and Testing
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Your front end wants to ask for exactly the fields a screen needs, and your back end has to survive what that freedom allows. This book builds a complete GraphQL server in JavaScript, one feature at a time, around a small online shop. You will design schemas in SDL, write queries, write resolvers you can debug, and shape mutations that report expected problems as data and survive retries. Cursor pagination, batching that removes the N+1 problem, object-level and field-level authorization, honest error handling, query depth limits and safe schema evolution each get a chapter, a worked example and a checklist. Every listing was run and the output shown is real. A quick reference closes the book with checklists, a troubleshooting table, a glossary and review questions.
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