Graphql - Apollo server example graphql apollo-server principled GraphQL how-to-structure-graphql-server-code schema-chaning-automatically with rest graphql-tool 01-query graphql Scalar Type Int - 32bit Float String - UTF-8 Boolean ID graphql naming convention 02-query-input input 03-query-scalar-custom custom graphql-scalar 04-mutation mutation 06-union union 07-interface interface 08-mutation-response mutation-response 09-resolver-chain resolver-chain 10-file-upload file-upload upload-best-practices 11-paging pagination repo cursor base cursor spec https://entgo.io/docs/tutorial-todo-gql 12-modularizing modularizing 13-error-handling error-handling 14-auth authentication authorization 3 ways 15-file-upload-aws aws ex