3.6. Microservice API

• Wersjonowane

• Stabilne

• Deprecation policy

• HTTP, REST, JSON

• BFF, API Gateway

• GraphQL

3.6.1. Direct

Figure 3.29. Source: [1]

3.6.2. API gateway

• Implement an API gateway that is the single entry point for all clients. The API gateway handles requests in one of two ways. Some requests are simply proxied/routed to the appropriate service. It handles other requests by fanning out to multiple services.

• Rather than provide a one-size-fits-all style API, the API gateway can expose a different API for each client. For example, the Netflix API gateway runs client-specific adapter code that provides each client with an API that's best suited to it's requirements.

• The API gateway might also implement security, e.g. verify that the client is authorized to perform the request

• Netflix API gateway, Zuur

Figure 3.30. Source: [1]

3.6.3. BFF Model

Figure 3.31. Source: [1]

3.6.4. GraphQL

3.6.5. Historie

• przykład stabilności webapi i mobilnych stron

• wersjonowanie w nagłówkach HTTP i q=...

• POST, PUT, PATCH, GET, DELETE

3.6.6. Further Reading

• http://allegro.tech/2015/01/Content-headers-or-how-to-version-api.html

3.6.7. References

[1] (1,2,3)

TDA Corporation. BFF - Backend for frontend. Year: 2020. Retrieved: 2022-03-28. URL: https://blog.tda.company/bff-backend-for-frontend/