REST vs GraphQL
Differences, use cases, and when to use each
REST is an architectural style using HTTP verbs and resource URLs. GraphQL is a query language where the client specifies exactly what data it needs. REST is simpler and standard; GraphQL excels for complex, data-intensive applications.
Quick Comparison
| Feature | REST | GraphQL |
|---|---|---|
| Data Fetching | Fixed endpoints return fixed data | Client requests exactly what it needs |
| Over-fetching | Common (endpoint returns all fields) | Eliminated (specify fields) |
| Multiple Resources | Multiple requests needed | Single request for all data |
| Learning Curve | Low | Moderate to high |
| Caching | Simple (HTTP caching) | Complex (no URL per query) |
When to Use Each
When to Use REST
Use REST for standard CRUD APIs, simple data models, public APIs, and any project where simplicity, caching, and broad tool support are priorities.
When to Use GraphQL
Use GraphQL when clients need flexible data fetching, you have many resource types with complex relationships, and mobile clients need to minimize bandwidth usage.
Pros & Cons
REST
GraphQL
Verdict
REST for simple APIs and public endpoints. GraphQL for data-intensive applications with complex relationships and diverse clients (web, mobile, third-party). Many companies use both.