What are the differences between REST APIs and GraphQL?

What are the differences between REST APIs and GraphQL?

REST APIs and GraphQL are both used for data fetching, but they have key differences. REST uses multiple endpoints for different resources, while GraphQL uses a single endpoint and allows clients to request exactly the data they need.

Can you explain how data fetching works in GraphQL?

In GraphQL, clients send a query to the server specifying the exact data structure they need. The server then responds with a JSON object that matches the query, which can reduce over-fetching and under-fetching of data.

What are some advantages of using GraphQL over REST?

Some advantages of GraphQL include more efficient data retrieval, reduced number of requests, and the ability to evolve APIs without versioning.

Are there any downsides to using GraphQL?

Yes, some downsides include complexity in caching, potential for over-fetching if queries are not optimized, and a steeper learning curve for developers.