mbeju

mbeju is a basic Spring Boot application which implements GraphQL caching, using resolvers for a crude Post:Producer data model. The ProducerResolver uses Thread.sleep to mock round-trip time to an improvised backend.

A Spring @Cacheable annotation on the resolver method implements caching for Producer objects on producer.id and Post on post.producerId. Specific caches can be implemented as required and specify eviction times based on type, context, etc. mbeju implements a 20-second TTL for all producers and 5-second TTL for posts.

The GraphiQL interface can be found available on http://localhost:8080/graphiql

GraphQL example

graphql
{
  allPosts {
    title
    producer {
      id
      name
      posts {
        title
      }
    }
  }
}

Bash example

bash
curl 'http://localhost:8080/graphql' -H 'Accept: application/json' -H 'Content-Type: application/json' --data-binary '{"query":"{\n  allPosts {\n    title\n    producer {\n      id\n      name\n    }\n  }\n}\n","variables":null}'