In this presentation, Łukasz explains what exactly API Gateway is and debates about many problems that it actually can solve. He uses AWS API Gateway as an example.

1. REST API / Microservices ?

2. REST API ?
- Security
- Cache
- CORS
- Request Tracking
- Throttling
- Clients
- Quota
- Developer Portal
- ...

4. AWS API GATEWAY
Łukasz Marchewka @ scalac

5. About me
- Java Developer 6y
- Scala Developer 6y
- Software Architect
- Reactive Systems
- Functional Programing
- Big Data
- Fast Data

6. Client - Service

7. Client - API Gateway - Service

8. Microservices without API Gateway

9. Microservices with API Gateway

10. Microservices with API Gateway

13. Solutions
- Kong
- Tyk.io
- APIGee
- AWS Gateway
- Azure Gateway
- ...

14. AWS API Gateway

15. Advantages
- Cloud vendor PaaS
- OpenAPI 3 / Swagger 2
- Management (SDK, Console, REST API)
- Simple
- Support for WebSockets
- Monitoring
- SDK Generator
- Integration with Lambda & other AWS services

16. Architecture

18. Demo

19. Scope
- Basic example
- Mocking
- Validation
- Mapping
- Security
- Integration with Lamba
- Usage Plans & Clients

20. How to start
- Create AWS account
- Configure access to API Gateway & Lambda

21. Simple API

22. Simple API
- API: catalog
- Method: GET /pets => GET
https://petstore.swagger.io/v2/pet/findByStatus?status=available
- Model
- Mapping template

25. CORS

28. Validation & Mapping

29. Validation & Mapping
- API: management
- Method: POST /pets => POST https://petstore.swagger.io/v2/pet
- Validation
- Method: DELETE /pet/{id} => DELETE =>
https://petstore.swagger.io/v2/pet/{id}
- Request mapping
- Response mapping

32. Security

33. Security
- Lambda Authorizer
- Authentication
- Resource Policy

36. Clients

37. Clients
- API Keys
- Usage Plan
- Throttling
- Quota

39. Serverless

40. Serverless

41. More
- Custom Domain
- Client Certificate
- Logs (Cloud Watch)
- Monitoring
- Developer Portal *
- Resource Policy (ip filter)
- Stage Variable
- SDK Generator
- Canary Release

42. Problems
- OpenAPI 3 not fully implemented
- Difficult to debug
- A lot of boilerplate
- Meaningless errors from AWS
- Limitations

43. Kong

44. Kong
- Open Source
- built on Nginx
- Custom plugins - Lua

45. Apigee

46. Apigee
- From Google
- Plugins out of box
- Custom plugins - JavaScript
- Debug friendly
- Good documentation
- Missing Management API

47. Apigee

48. Q & A
Łukasz Marchewka
https://github.com/LukaszMarchewka/aws-api-gateway