REST API vs. GraphQL

When it comes to API design, REST and GraphQL each have their own strengths and weaknesses.

REST

• Uses standard HTTP methods like GET, POST, PUT, DELETE for CRUD operations.
• Works well when you need simple, uniform interfaces between separate services/applications.
• Caching strategies are straightforward to implement.
• The downside is it may require multiple roundtrips to assemble related data from separate endpoints.

GraphQL

• Provides a single endpoint for clients to query for precisely the data they need.
• Clients specify the exact fields required in nested queries, and the server returns optimized payloads containing just those fields.
• Supports Mutations for modifying data and Subscriptions for real-time notifications.
• Great for aggregating data from multiple sources and works well with rapidly evolving frontend requirements.
• However, it shifts complexity to the client side and can allow abusive queries if not properly safeguarded.
• Caching strategies can be more complicated than REST.

The best choice between REST and GraphQL depends on the specific requirements of the application and development team. GraphQL is a good fit for complex or frequently changing frontend needs, while REST suits applications where simple and consistent contracts are preferred.