Why use Graphql Link?

GraphQL-Link is an GraphQL gateway that lets you easily proxy to other GraphQL servers.

Consolidate access to multiple upstream GraphQL servers via a single GraphQL gateway server.
Introspection of the upstream server to discover their GraphQL schemas.
The configuration uses GraphQL queries to define which upstream fields and types can be accessed.
Upstream types, that are accessible, are automatically merged into the gateway schema.
Type conflict due to the same type name existing in multiple upstream servers can be avoided by renaming types in the gateway.
Supports GraphQL Queries, Mutations, and Subscriptions
Production mode settings to avoid the gateway's schema from dynamically changing due to changes in the upstream schemas.
Uses the dataloader pattern to batch multiple query requests to the upstream servers.
Link the graphs of different upstream servers by defining additional link fields.
Web based configuration UI
OpenAPI based upstream servers (get automatically converted to a GraphQL Schema)