Creating a federated schema for a global company by Shane Myrick, Senior Software Developer at Expedia Group

Learn about how Expedia Group migrated from REST to GraphQL and why they decided to use the technology. We will also cover the tools used like graphql-java and Expedia's open source library, graphql-kotlin, and the challenges faced when teaching developers new technologies and how they create a schema while communicating with teams across the world

Transcript

1. Creating a federated schema for a global company Shane Myrick Senior Software Developer
3. 3 Company Structure Shopping Teams Supply Teams
4. 4 Company Structure Shopping Teams Supply Teams
5. 5 50+ front-end apps and client pages Company Scope 500+ developers across the globe 20+ API Teams for hotels, flights, bookings…
6. 6 Traveler Experience
7. 7 Traveler Experience
8. 8 Traveler Experience
9. 9 Client Connections Alexa Chat PWA iOS Android Hotel Domain Services Flight Domain Services Customer Domain Services Checkout Domain Services
10. 10 Client Connections Alexa Chat PWA iOS Android Hotel Domain Services Flight Domain Services Customer Domain Services Checkout Domain Services BFF
11. 11 GraphQL Connections Hotel domain services Alexa Chat PWA iOS Android Flight domain services Customer domain services Checkout domain services GraphQL API
12. 12 GraphQL Connections Hotel domain services Alexa Chat PWA iOS Android Hotel Service Flight Service Flight domain services Customer Service Customer domain services Checkout domain services Checkout Service GraphQL Gateway
13. 13 Technology Changes
14. 14 Different tools for logging and metrics Existing Technology Java APIs and libraries Servers in different technologies
15. 15 CI\CD process Standardize Tools graphql-java / Kotlin GraphQL Server SDK
16. 16 Schema Generator
17. 17 Shared Types
18. 18 Schema Stitching Hotel Service Flight Service Customer Service Checkout Service GraphQL Gateway getLatestSchema()
19. 19 Schema Stitching Hotel Service GraphQL Gateway Schema Schema Stitcher Flight Service Schema Schema
20. 20 Schema Validation
21. 21 Schema Validation
22. 22 Culture Changes
23. 23 Bring teams together Schema Managers Someone to take responsibility Coordinate between teams
24. 24 Strive for the best, scalable solution first Schema Rules Documentation – Write it down Schema reviews with teams
25. 25 Only add data that is needed Schemas built by clients Have the client create their perfect schema Work to adapt the service layer
26. 26 Hotels API Example
27. 27 Hotels Client Example
28. 28 Create a community around a great schema Lessons Learned Standardize tooling to meet developer needs Client-first schema
29. 29 Graph for your business GraphQL API
30. 30 @ExpediaGroup Expedia Group @ExpediaEng Careers – lifeatexpedia.com
31. 31 @shanemyrick @shanemyrick Shane Myrick
32. 32 Resources • Expedia Group Info & Brands • https://www.expediagroup.com/ • GraphQL website and pictures • https://graphql.org/ • GraphQL Java • https://github.com/graphql-java/graphql-java • GraphQL Kotlin • https://github.com/ExpediaDotCom/graphql-kotlin • https://medium.com/expedia-engineering/21d1dc2f6e27 • Apollo Platform, Engine, Gateway and pictures • https://www.apollographql.com/platform/ • Principled GraphQL • https://principledgraphql.com/ • Hotel Search Results • https://www.expedia.com/Hotels
33. 33 Thank You!