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How does GraphQL differ from traditional REST APIs?
Asked on Nov 22, 2025
Answer
GraphQL and REST are both API design paradigms, but they differ significantly in how they handle data fetching and structure. GraphQL allows clients to request exactly the data they need, reducing over-fetching and under-fetching issues common in REST, where endpoints return fixed data structures.
Example Concept: GraphQL provides a single endpoint for querying data, allowing clients to specify the exact fields they need in a query. This contrasts with REST APIs, which often have multiple endpoints for different resources, each returning a predefined data structure. GraphQL's flexibility in data retrieval can lead to more efficient network usage and easier API evolution.
Additional Comment:
- GraphQL uses a schema to define the types and relationships in the API, which helps in validating queries.
- REST APIs use HTTP methods (GET, POST, PUT, DELETE) to perform operations, while GraphQL uses a single POST request with a query payload.
- GraphQL can aggregate data from multiple sources in a single query, whereas REST might require multiple requests to different endpoints.
- GraphQL requires a runtime to execute queries against the schema, which can add complexity to the server setup.
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