/graphql-1.txt
Last active May 1, 2019
GraphQL Summit 2017 in San Francisco
| GraphQL at massive scale | |
| - IBM cloud = node micro services (30+ teams) - separate codebases | |
| - frontend need to fetch data from multiple endpoints (bad documentation) - it’s a inconsistent mess | |
| - graphql centralize this - grapnel microservice (single endpoint), documentation included | |
| - data sources (schema + resolvers + model + connector) = plugin (independent GitHub repo) | |
| - GrAMPS Middleware (schema stitching) | |
| - extended error messages (GUID, documentation links | |
| - datasource starter kit (strong starting point for new data sources) | |
| - GitHub: grapms-graphql/gramps-express (based on Apollo server) - MIT licence - GraphQL Apollo Microservice Patterns Server | |
| Universal GraphQL - beyond the frontend | |
| - Apollo link, Apollo cache, Schema Stitching, Apollo Engine | |
| - GraphQL for designers (React Sketch.app) - real datasources! - move GraphQL early into your process | |
| - Apollo Launchpad | |
| - Apollo Client 2.0 (server rendering + client merge deferred) - https://github.com/apollographql/apollo-client/pull/2393 | |
| GraphQL - client-driven development | |
| - started as FQL as a wrapper around business logic and storage layer -> GQL (because of iOS client needs) | |
| - fragments originally only on client with defragmentation (server didn’t know the fragments for ~3 months) | |
| - Component Kit (iOS), Litho, Flux | |
| - Mutations (missnamed -> should’ve been Actions from Flux) | |
| - server implemented mutations 5-6 months behind the client (client hidden REST + GraphQL requests) | |
| - subscriptions on client … similar story | |
| - quote: "Done is better than perfect" | |
| - at the beginning it was just query but it made sense on client and eventually it was implemented in server (because it made sense) | |
| Lightning Talks (nugget of awesomenes) | |
| - Animation as a Function of Data (Operation Result, Type System, ALL THE THINGS) | |
| - Jam Stack https://jamstack.org/, Jam Stack Radio | |
| - Devtools for GraphQL (Apollo, Relay) | |
| Building GraphQL-native Microservices (Graphcool) | |
| - backend: not as a gateway for REST but native implementation on server | |
| - schema stitching, GraphQL Weaver | |
| - Graphcool Framework opensourced (GraphQL Database, cloud native) | |
| - GraphQL SDL (?) | |
| - Framework demo: ??? https://github.com/graphcool/framework | |
| GraphQL Subscriptions - the full stack | |
| - normal queries are request/response, client driven, fetches exactly, but without real-time updates (tricky with request/response) | |
| - subscriptions: request followed by stream of responses ("response stream" result of new event on an underlying "source stream") | |
| - lifecycle: request, subscribe (construct source stream + subscribe those events), response | |
| - scaling state is hard (state = who subscribed, what day sent, how to send back, …) | |
| - live queries (for reactive GraphQL) = observing state (live) vs. observing events (subs) | |
| Lightning Talks | |
| - GraphQL Radio (?) - https://graphqlradio.com/ | |
| - how to convince coworkers for GraphQL in the company (in general convince about new idea) | |
| - remember - Introduce a designer to GraphQL today | |
| Extending the Limits of GraphQL (author of Graphene - Python implementation) … CEO try.com | |
| - announcement of Graphene-Python 2.0 (better resolution API, Python 3 + Subscriptions thanks to async iterators) | |
| - https://github.com/graphql-python/graphql-ws | |
| - http://graphene-js.org/ | |
| - http://graphql-quiver.com/ | |
| - quote: "Your API is a user interface." | |
| Going Public: Launching and Scaling a GraphQL API for 3rd party Developers (Yelp, GitHub) | |
| - https://github.com/gjtorikian/graphql-docs | |
| - "@deprecated" directive is useless (Lee Byron) | |
| - GitHub - rate limiting via time (RateLimit query: out, limit, nodeCount, remaining, resetAt) | |
| WPGraphQL | |
| Moving the New York Times to GraphQL | |
| - https://github.com/NYTimes/kyt | |
| - QueryRenderer from Relay Modern is not isomorphic (does not support SSR) | |
| - uses Apollo client (1.0) | |
| - Scoop CMS | |
| - very long queries (20kb query itself) | |
| - recursion (infinite) in GraphQL is still unsolved problem | |
| Questions | |
| - Relay Client Extensions - not really documented and not completely ready yet because client schema needs to be little bit different - but stay tuned! (Lee Byron) | |
| - all nullable fields (how to handle in React)? - try to write Babel plugin similar to "_.get" that expands all the checks even with Flow annotation (Lee Byron) - FB call it IDX | |
| - Viewer pattern (mutations?) |
| quote: "It’s not about what technology you use but what you can build with it…" | |
| The GraphQL Stack: How everything fits together | |
| - GraphQL result caching - GraphQL Gateway in front of GraphQL Server (additional layer) | |
| - Apollo Engine GraphQL Gateway … GraphQL result caching (memcache) | |
| - Full stack caching (Apollo, Relay) | |
| - response "extensions" - https://github.com/apollographql/apollo-cache-control (per path cache hits), https://github.com/apollographql/apollo-cache-control-js | |
| - caching in the API and the client | |
| - Tracing + Errors - https://github.com/apollographql/apollo-tracing, https://github.com/apollographql/apollo-tracing-js | |
| - Schema Stitching (via Stitcher) | |
| Twitch’s GraphQL Transformation | |
| - switched from REST APIs to GraphQL in one year | |
| - authorisation - pushed to uservices (it’s not part of the API layer) | |
| - GQL Europe - How to implement authorisation… (YouTube video) | |
| - document good practices (!) - explain why | |
| - iterate on a styleguide, write linters (!) - enforces styleguide, don’t use boilerplate, generate code instead | |
| - quote: "Wanna go fast? - go alone … far? Go together.." | |
| GraphQL Under the Hood | |
| - parse query: string -> parser + lexer -> AST … semantically correct | |
| - validation of the schema: persistent/static queries (extract all queries on compile time to the server and after that just send only ID of the queries from client - no need for sexing, parsing and validation - store AST) | |
| - we can run multiple operations at the time (?) | |
| - execute schema ; context is not part of the specification | |
| Lightning Talks | |
| - native mobile apps with GraphQL - avoid overfetching and extra round trips | |
| - GraphQL on the Edge (pushing GraphQL to the very edge) "GNT" - GraphQL Normalized Types - https://github.com/mfix22/gnt | |
| - GraphQL gest (for testing) - https://github.com/mfix22/gest | |
| - KhanAcademy - best practices for errors in GraphQL - errors part of the response (validation: response field "errorFields + hasError") | |
| - quote: "some errors are really data" (!) | |
| Teaching GraphQL | |
| - a model for learning new skills (stages: beginner, competent practitioner, expert) | |
| - quote: "All models are wrong, but some are useful." | |
| Handling Authentication and Authorization in GraphQL | |
| - internal tool called Phenix (Slackbot) for getting credentials inside of company (Auth0) | |
| - GraphQL doesn’ have opinion about authorization | |
| - get headers from context in resolver (kinda Viewer approach, but not really - he didn’t mention the Viewer) | |
| - directives (@hasScope, @isAuthenticated) - on the server schema definition - https://github.com/chenkie/graphql-auth | |
| - http://graphqlworkshops.com/ | |
| Building Large-Scale, Multi-Branded Web App on a GraphQL Foundation (Air France + KLM) | |
| - BlueWeb Project (new interface for KLM and AirFrance) | |
| - Typescript, Angular, Apollo (client + server), Node.js, Docker, NgRx (to manage client store - now replaced with Apollo) | |
| - 4 related project with separate release cycles - UBCs (Unique Business Component) | |
| . schema for each of UBC (again independent subportions of the schema - but not in one schema because of single point of failure) | |
| - all types and resolvers in separate schema as a NPM packages | |
| - they are using "buildSchema" from Apollo | |
| - "don’t request same types in one query" | |
| - they want to implement persistent queries in the future | |
| - price for flight per hour (interesting idea) | |
| Lightning Talks | |
| - how to manage massive FB schemas (10k, 20k+ types) | |
| - types == class, fields == methods | |
| - using meta annotations in Hack to generate GraphQL Schema (don’t write your own schema but write it to code) | |
| - FB use codegens for this | |
| - Apollo-Codegen - https://github.com/apollographql/apollo-codegen | |
| - tools: eslint-plugin-graphql (knows how to validate schema), apollo-codegen, prettier | |
| GraphQL Live: Reactive Queries at Facebook | |
| - new way of doing live updates in GraphQL | |
| - "query @live {" | |
| - pushing updates to clients via HTTP2 (?) | |
| - state oriented (not event oriented === subscriptions) | |
| - reactive datalayer | |
| - polling is perfectly valid but quite naive | |
| - reactive datastore (Meteor, Firebase, RethingDB) | |
| - problems with over-observing, masked dependencies (depends only on previous query), partial reactivity, … | |
| Apollo Client 2.0 - More Than GraphQL | |
| - YouTube: Apollo Mission Briefing | |
| - cache, link (opens door for local storage like Relay client extensions) | |
| - Apollo Link State (@client directive) - soon | |
| - Apollo Link REST (@rest directive) - query REST data with GraphQL … "@rest(route: '/users') @type(type: 'User[]')" | |
| GraphQL at Twitter | |
| - a lot of microservices (Thrift services (!)) | |
| - meassure query complexity and depth | |
| - all queries whitelisted | |
| - Strato (internal virtual database) - closed source | |
| "Quote: "GraphQL is enabling technology" |
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