Key Takeaways
- REST is the default API architecture for 80%+ of web services due to its simplicity and universal tooling support.
- Well-designed REST APIs use HTTP methods semantically: GET reads, POST creates, PUT updates, DELETE removes.
- REST's stateless design makes it inherently scalable and cacheable, ideal for high-traffic applications.
REST API Design Best Practices
A well-designed REST API is intuitive, consistent, and predictable:
- Use nouns for endpoints: `/users`, `/orders`, `/products` (not `/getUsers` or `/createOrder`).
- Version your API: `/api/v1/users` allows breaking changes in v2 without disrupting existing clients.
- Return proper status codes: 200 (success), 201 (created), 400 (bad request), 404 (not found), 500 (server error).
- Paginate large collections: Use `?page=2&limit=50` to avoid returning thousands of records in one response.
- Use consistent error formats: Return structured error objects with code, message, and field-level details.
Frequently Asked Questions
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