Schema Stitching
Schema stitching is a technique in GraphQL that allows developers to combine multiple GraphQL schemas into a single, unified schema. It enables the creation of a gateway that aggregates data from various microservices or disparate data sources, providing a cohesive API to clients. This approach simplifies client-side queries by abstracting the complexity of interacting with multiple backend services.
Developers should use schema stitching when building applications that rely on multiple GraphQL services or need to integrate data from different sources, such as in microservices architectures or legacy system integrations. It is particularly useful for creating a unified GraphQL gateway that hides backend complexity, improves developer experience, and reduces network overhead by allowing single queries to fetch data from multiple services. This technique helps in scenarios like merging schemas from different teams or third-party APIs into one endpoint.