GraphQL Server
A GraphQL server is a backend service that implements the GraphQL specification to provide a flexible and efficient API for querying and manipulating data. It exposes a schema that defines the types and operations available, allowing clients to request exactly the data they need in a single request. This reduces over-fetching and under-fetching issues common in REST APIs.
Developers should use a GraphQL server when building applications that require complex data fetching from multiple sources, such as mobile apps, web dashboards, or microservices architectures. It is ideal for scenarios where clients have varying data requirements, as it enables precise queries and real-time updates via subscriptions, improving performance and developer experience.