Comparisons
REST vs GraphQL: Which Should You Use?
Both are ways to design an API -- the real question is whether your clients' data needs are simple and uniform (REST fits well) or complex and varied (GraphQL earns its extra complexity).
Side-by-Side Comparison
| REST | GraphQL |
|---|---|
| Multiple endpoints, each with a fixed response shape | One endpoint; client specifies exactly what fields it needs |
| Over/under-fetching is common | Fetch exactly what's needed, no more |
| Simple to cache with standard HTTP caching | Requires more deliberate caching setup |
| Simpler to learn, build, and debug | More powerful for complex, deeply nested data needs |
| Well-understood, works with standard HTTP tooling everywhere | Needs a GraphQL-aware client/server setup |
How to Actually Decide
For a straightforward CRUD API with predictable, uniform data needs, REST is usually simpler to build, cache, and reason about -- and it remains the dominant choice for most APIs. GraphQL earns its added complexity when a frontend genuinely needs to combine deeply related, nested data in a single request (a mobile app screen pulling a user profile, their orders, and recommendations together), or when many different client types need very different slices of the same underlying data.
Frequently Asked Questions
It's a common fit since mobile apps benefit a lot from minimizing round trips and over-fetching on limited bandwidth -- but it's not automatic. A well-designed REST API with endpoints tailored to specific screens can also work well; GraphQL is one solution to that problem, not the only one.
No -- many real companies run both, using REST for simpler internal/public APIs and GraphQL for a specific frontend with genuinely complex data needs. It's a per-API decision, not a company-wide commitment.