Understanding GraphQL
summary
An introduction to GraphQL as a strongly typed API query language that avoids overfetching and excessive requests by letting clients explicitly select fields. It covers how to design GraphQL schemas and implement servers/clients in multiple languages (TypeScript, Kotlin, Rust), explains the GraphQL type system (objects, polymorphic types, queries, mutations, subscriptions), error handling, request-resolution strategies (for example using coroutines), and advanced techniques like request contexts and interceptor chains.
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chapters (36)
- 0:00Conference welcome
- 0:25Introduction
- 1:29Microservice integration problems
- 4:18GraphQL history
- 4:38Conference agenda
- 8:12GraphQL basics
- 9:15Minimal GraphQL schema
- 16:14TypeScript Apollo demo
- 22:13First queries Playground
- 27:33Nullability schema docs
- 30:22Query args defaults
- 35:16Kotlin Spring demo
- 42:38Query Mutation Subscription
- 47:41Union Interface types
- 58:04Polymorphic resolution
- 1:00:37Functions in schemas
- 1:04:55Mutations subscriptions
- 1:06:19WebSocket Reactor subs
- 1:08:48Complex args input types
- 1:13:24Primitive types maps
- 1:14:06Server query optimization
- 1:16:35Database performance
- 1:22:12Advanced features
- 1:23:16Kotlin coroutines perf
- 1:31:01Client directives skip include
- 1:34:13Coroutines async execution
- 1:40:17Server directives annotations
- 1:58:22Custom scalar types
- 2:04:28Context security
- 2:08:21Query transport
- 2:14:26Parallel vs sequential
- 2:19:11Schema compatibility
- 2:26:56Schema composition
- 2:30:27Stitching demo
- 2:41:13Apollo Router composition
- 2:53:44Schema conflicts joins
