REST API Design Best Practices

What is REST?

REST (Representational State Transfer) is an architectural style for designing networked applications. It relies on stateless, client-server communication.

HTTP Methods

• GET - Retrieve resources
• POST - Create new resources
• PUT - Update entire resources
• PATCH - Partial updates
• DELETE - Remove resources

URL Structure

Keep your URLs clean and intuitive:

GET    /api/users
GET    /api/users/:id
POST   /api/users
PUT    /api/users/:id
DELETE /api/users/:id

Status Codes

Use appropriate HTTP status codes:

• 200 - Success
• 201 - Created
• 400 - Bad Request
• 401 - Unauthorized
• 404 - Not Found
• 500 - Server Error

Versioning

Version your API to maintain backward compatibility:

/api/v1/users
/api/v2/users

Best Practices

• Use nouns for resource names, not verbs
• Implement pagination for large datasets
• Add filtering and sorting capabilities
• Provide comprehensive error messages
• Document your API thoroughly