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.

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