Container View for the simple RESTful Communication Microservices Example

Diagram

Description

Shows the containers of the simple Microservices Example and their RESTful communication.

Documentation

With RESTful communication, the services communicateby calling each other's RESTful APIs in a request/response pattern. The upstream service blocks until the downstream service responds. So the services are tightly coupled and the communication is synchronous. If a downstream service is slow, the upstream service has to wait for the downstream service and as a result, it also responds slowly. If the downstream service is down, the upstream service also fails. Also one service has to know the details of the other service's API and is responsible for the orchestration of the process.

Roles

Person/Role	Description
Customer	A customer of the online shop

Containers

Container	Description
Inventory Service	Handles inventory
Notification Service	Handles notifications
Order Service	Handles orders
Payment Service	Handles payments
Shipping Service	Handles shipping
Shop Frontend	The frontend of the online shop

Synchronous Requests

From	Name	To	Technology	Description
Shop Frontend	calls	Order Service		get products, place orders
Order Service	request	Shipping Service	REST	Ship Order
Order Service	request	Notification Service	REST	Notify Customer
Order Service	request	Inventory Service	REST	Update Inventory
Order Service	request	Payment Service	REST	Payment for Order
Customer	uses	Shop Frontend		browse products, place orders

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