Software

API Design Best Practices: From RESTful to GraphQL

Enterprise API design best practices covering RESTful API and GraphQL pros and cons, version management, authentication, and documentation.

POLYGLOTSOFT Tech Team2025-09-128 min read0

APIRESTGraphQLDesign Patterns

The Importance of API Design

APIs are the foundation of inter-system communication. Well-designed APIs boost development productivity, while poorly designed ones accumulate technical debt.

REST vs GraphQL

RESTful API

Resource-centric design using HTTP methods

Easy caching, simple and intuitive

Potential over-fetching and under-fetching issues

GraphQL

Clients request exactly the data they need

Single endpoint, type system-based

Complex caching, learning curve exists

Selection Criteria

REST: CRUD-centric, simple data structures, caching important

GraphQL: Complex data relationships, diverse clients, flexible queries needed

API Design Best Practices

Version Management

Specify the version in the URL path: /api/v1/resources

Authentication

Apply OAuth 2.0 or JWT-based authentication.

Error Handling

Define consistent error response formats and use appropriate HTTP status codes.

Documentation

Use OpenAPI (Swagger) or GraphQL Schema for automatic documentation.

Conclusion

Good API design is the foundation for system scalability. POLYGLOTSOFT supports systematic API design and development.

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