How APIs Use GraphQL Unions to Simplify Complex Responses

Episode 58 of The API Podcast. Lucas and Luna explore how GraphQL unions and interfaces clean up messy API responses that previously required multiple round trips or awkward nullable fields. Using the example of a social media feed that mixes text posts, images, and polls, they show how unions let clients request heterogeneous data in a single query with type-safe handling. They also discuss performance trade-offs, tooling support in GraphQL code generators, and why not every API should switch from REST to GraphQL unions. This episode gives developers a concrete pattern to reduce payload complexity and client logic. #GraphQL #Unions #Interfaces #APIDesign #RESTvsGraphQL #TypeSafety #WebAPIs #ApolloGraphQL #GraphQLCodegen #DataFetching #APIPerformance #FrontendDevelopment #Technology #APIPodcast #FexingoBusiness #BusinessPodcast #SoftwareEngineering #WebDevelopment Keep every episode free: buymeacoffee.com/fexingo