Merge branch 'main' of https://github.com/selfdriventeam/kata into main

doc/arc/components/notification_engine.md

@@ -6,13 +6,15 @@ Notification engine contains 4 major subcompoents and 2 major databases. It prov
 
 The **Public API** provides APIs such as <code>create_topic, subscribe_topic</code> and <code>publish_message</code>, for other services to interact with Notification engine. The topics and subscribers are added to the **Topics and Subscribers Databases**
 
-The **Message Retriever** is responsible of interaction with the queue. 
+The **Message Retriever** is responsible of interaction with the queue.
 
-The **Retry Mechanism** ensures each client receives message at least once. It has in-memory database to retry the message for a predefined number of time, and when all these attempts fail, it persistents the message into **Short Term Message Database** for retry later. 
+The **Retry Mechanism** ensures each client receives message at least once. It has in-memory database to retry the message for a predefined number of time, and when all these attempts fail, it persistents the message into **Short Term Message Database** for retry later.
 
-The **Sender** encapsulates all the details of interfacing with SMS, Email Push Notification libraries. 
+The **Sender** encapsulates all the details of interfacing with SMS, Email Push Notification libraries.
 
 ## Communicates With:
-* [Order Domain](/doc/arc/components/order_domain.md) Receive internal order status updates.
 * [Billing Domain](/doc/arc/components/billing_domain.md) Receive billing confirmations.
+* [Customer Domain](/doc/arc/components/customer_domain.md) for customer preferences/information used in model building
 * [Inventory Domain](/doc/arc/components/inventory_domain.md) Receive restock notifications.
+* [Order Domain](/doc/arc/components/order_domain.md) Receive internal order status updates.
+* [Recommendation Engine](/doc/arc/components/recommendation_engine.md) for notifying customers of new recommendations.