Container View for the Event Driven Microservices Example

Diagram

Description

Shows the containers of the Microservices Example and their event driven communication

Roles

Person/Role	Description
Customer	A customer of the online shop

Systems

System	Description
Email System	Sends Emails e.g. to customers
Logistics System	Handles shipping with DHL, UPS, etc.
Payment System	Handles Credit Card, PayPal, etc.

Containers

Container	Description
Account Database	Stores user accounts
Account Service	Handles user accounts
Account Topic	Account Events
Inventory Database	Stores the inventory
Inventory Service	Handles inventory
Inventory Topic	Inventory Events
Notification Service	Handles notifications
Order Database	Stores the orders
Order Service	Handles orders
Order Topic	Order Events
Payment DB	Stores payments
Payment Service	Handles payments
Payment Topic	Payment Events
Product Catalog Database	Stores the product catalog
Product Catalog Service	Handles the product catalog
Shipping Database	Stores the shipping data
Shipping Service	Handles shipping
Shipping Topic	Shipping Events
Shop Frontend	The frontend of the online shop
Shopping Cart Database	Stores the shopping cart
Shopping Cart Service	Handles the shopping cart
Shopping Cart Topic	Shopping Cart Events

Synchronous Requests

From	Name	To	Technology	Description
Shop Frontend	calls	Order Service		get products, place orders
Notification Service	request	Account Service	REST	Email for Account
Notification Service	request	Email System	SMTP	Send Email
Shopping Cart Service	request	Product Catalog Service	REST	Product Data
Order Service	request	Shipping Service	REST	Ship Order
Order Service	request	Notification Service	REST	Notify Customer
Shopping Cart Service	request	Order Service	REST	Create Order
Product Catalog Service	request	Inventory Service	REST	Check Inventory
Payment Service	request	Account Service	REST	Payment Data
Shipping Service	request	Logistics System	REST	Ship Order
Shipping Service	request	Account Service	REST	Account Address
Payment Service	request	Payment System	REST	Trigger Payment
Order Service	request	Inventory Service	REST	Update Inventory
Order Service	request	Payment Service	REST	Payment for Order
Inventory Service	store	Inventory Database	JDBC	Inventory Data
Payment Service	store	Payment DB	JDBC	Payment Data
Account Service	store	Account Database	JDBC	Account Data
Order Service	stores/queries	Order Database	JDBC	Order Data
Product Catalog Service	stores/queries	Product Catalog Database	MongoDB	Product Catalog
Shipping Service	stores/queries	Shipping Database	MongoDB	Shipping Data
Shopping Cart Service	stores/queries	Shopping Cart Database	MongoDB	Shopping Cart Data
Customer	uses	Shop Frontend		browse products, place orders

Asynchronous Publish/Produce

From	Name	To	Technology	Description
Payment Service	publish	Payment Topic	Kafka	PaymentProcessedEvent, PaymentFailedEvent
Shipping Service	publish	Shipping Topic	Kafka	ShippingProcessedEvent, ShippingFailedEvent
Order Service	publish	Order Topic	Kafka	OrderProcessedEvent, OrderCancelledEvent
Account Service	publish	Account Topic	Kafka	AccountCreatedEvent, AccountUpdatedEvent, AccountDeactivatedEvent
Shopping Cart Service	publish	Shopping Cart Topic	Kafka	ShoppingCartOrderedEvent
Inventory Service	publish	Inventory Topic	Kafka	InventoryProcessedEvent, InventoryOutOfStockEvent

Asynchronous Subscribe/Consume

From	Name	To	Technology	Description
Order Service	subscribe	Shipping Topic	Kafka	ShippingProcessedEvent, ShippingFailedEvent
Notification Service	subscribe	Inventory Topic	Kafka	InventoryProcessedEvent, InventoryOutOfStockEvent
Payment Service	subscribe	Shipping Topic	Kafka	ShippingFailedEvent
Inventory Service	subscribe	Order Topic	Kafka	OrderProcessedEvent, OrderCancelledEvent
Payment Service	subscribe	Inventory Topic	Kafka	InventoryProcessedEvent
Payment Service	subscribe	Account Topic	Kafka	AccountCreatedEvent, AccountUpdatedEvent, AccountDeactivatedEvent
Notification Service	subscribe	Shipping Topic	Kafka	ShippingProcessedEvent, ShippingFailedEvent
Shipping Service	subscribe	Payment Topic	Kafka	PaymentProcessedEvent, PaymentFailedEvent
Order Service	subscribe	Shopping Cart Topic	Kafka	ShoppingCartOrderedEvent
Notification Service	subscribe	Order Topic	Kafka	OrderProcessedEvent, OrderCancelledEvent
Notification Service	subscribe	Payment Topic	Kafka	PaymentProcessedEvent, PaymentFailedEvent
Payment Service	subscribe	Inventory Topic	Kafka	InventoryOutOfStockEvent
Payment Service	subscribe	Shopping Cart Topic	Kafka	ShoppingCartOrderedEvent
Notification Service	subscribe	Account Topic	Kafka	AccountCreatedEvent, AccountUpdatedEvent, AccountDeactivatedEvent
Order Service	subscribe	Payment Topic	Kafka	PaymentProcessedEvent, PaymentFailedEvent

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