REST and GraphQL solve API design differently. Here's how to choose the right approach for your project.
Core Differences
REST:
- Multiple endpoints (/users, /posts, /comments)
- Fixed data shapes per endpoint
- HTTP methods define operations (GET, POST, PUT, DELETE)
- Stateless request/response
GraphQL:
- Single endpoint (/graphql)
- Client specifies exact data needed
- Query language defines operations
- Strongly typed schema
REST Example
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GraphQL Example
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When to Use REST
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When to Use GraphQL
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Performance Comparison
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Caching Strategies
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Error Handling
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Hybrid Approach
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Comparison Summary
| Aspect | REST | GraphQL |
|-----------------|----------------------|----------------------|
| Endpoints | Multiple | Single |
| Data fetching | Server decides | Client decides |
| Versioning | URL or header | Schema evolution |
| Caching | HTTP native | Custom solutions |
| File upload | Native support | Requires setup |
| Learning curve | Lower | Higher |
| Tooling | Mature | Growing rapidly |
| Over-fetching | Common | Solved |
| Under-fetching | Common | Solved |
| Type safety | Optional (OpenAPI) | Built-in |
Best Practices
Choose REST when:
✓ Simple CRUD operations
✓ Public APIs
✓ Heavy caching needs
✓ File operations
✓ Team new to APIs
Choose GraphQL when:
✓ Complex data relationships
✓ Multiple clients (mobile, web)
✓ Rapid frontend iteration
✓ Real-time requirements
✓ Internal APIs
Conclusion
Neither REST nor GraphQL is universally better. REST offers simplicity and mature tooling; GraphQL provides flexibility and efficiency for complex data needs. Consider your team's experience, client requirements, and caching needs. Often, a hybrid approach works best.