apollo-test Tutorial https://www.apollographql.com/docs/tutorial/introduction/?utm_source=khalil&utm_medium=article&utm_campaign=how_datasources_work Apollo studio https://studio.apollographql.com/ Rest data sources https://www.apollographql.com/docs/apollo-server/data/data-sources/ https://khalilstemmler.com/blogs/graphql/how-apollo-rest-data-source-caches-api-calls/ Json to Graphql https://walmartlabs.github.io/json-to-simple-graphql-schema/ Mocking https://www.apollographql.com/docs/apollo-server/testing/mocking/ Casual https://github.com/boo1ean/casual