REST vs GraphQL
๐น Data fetching REST APIs return fixed responses defined by the backend, which can lead to over-fetching or under-fetching of data. GraphQL allows clients to request exactly the data they need, nothing more and nothing less.
๐น Endpoints REST uses multiple endpoints for different resources like users, posts, or orders. GraphQL uses a single endpoint to access all data through queries and mutations.
๐น Performance REST can require multiple API calls to fetch related data. GraphQL can fetch related data in a single request, reducing network calls.
๐น Flexibility REST APIs require backend changes when the response structure needs to change. GraphQL gives frontend teams more flexibility since they control the shape of the response.
๐น Versioning REST often uses versioning like v1, v2, v3 when APIs change. GraphQL avoids versioning by evolving the schema without breaking existing queries.
๐น Caching REST works very well with HTTP caching mechanisms. GraphQL caching is more complex and usually handled at the application level.
๐น Use cases REST is best for simple CRUD operations and public APIs. GraphQL is ideal for complex UIs, mobile apps, and data-heavy applications.
๐ Rule to remember: Simple APIs with strong caching? Choose REST. Complex data needs with flexible queries? Choose GraphQL.