This document discusses Sitecore's messaging framework and message-based communication. It provides an overview of queues, topics, and Azure Service Bus. It then details how Sitecore's messaging framework utilizes the Rebus library to enable message-based communication in Sitecore using queues and topics. Examples are given for implementing queues and topics using the framework.

1. Sitecore Messaging
Framework
MIHÁLY ÁRVAI

2. Introduction
► Mihály Árvai
► Senior Sitecore Developer - Mirum
► ~ 10 years experience in Sitecore
► Hackathon winer 2019
► Twitter
► @Mitya_1988
► Slack
► Mitya88
► Medium
► @mitya_1988
► GitHub
► Mitya88

3. Agenda
 Message-based communication
 Basics
 Queues
 Topics
 Azure Service Bus
 Sitecore Messaging Framework
 Implementation samples
 Demo

4. Message-based communication

5. Request – Response
Image Source: https://www.researchgate.net/figure/HTTP-request-response-model_fig3_311571526

6. Request – Response
Image Source: https://doc.sitecore.com/developers/100/sitecore-experience-platform/en/xconnect-and-the-xdb.html

7. Message Broker
 Middleware, simple server
 Communication via AMQP
 Communication flow:
 Source application (sender) sends message to MB
 The MB stores it
 It deliveres the message to other application(s) (receiver(s))
 It takes the responsibility and complexity

8. Message Broker
 Point to point (Queues)
 Publish – Subscribe (PubSub)(Topics)

9. Point to point (Queue)
Image Source: https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-messaging-overview

10. Pub-Sub (Topics)
Image Source: https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-messaging-overview

11. Message Brokers
 Azure Service Bus
 RabbitMQ
 AmazonMQ

12. Azure Service Bus
 Enterprise, fully managed messaging service
 Reliable and secure platform for async transfer
 High availability
 Decouple applications
 Supports queues, topics (1:N)
 Message in binary format

13. Azure Service Bus
 Namespace
 Queue
 Topic
 Subscription

14. Other advanced features
 Autoforwarding
 Dead-letter queue
 Filtering
 Autodelete on idle
 Geo-disaster recovery

15. .NET Libraries
 Microsoft Azure ServiceBus SDK
 Rebus
 Azure Service Bus
 RabbitMQ
 SqlServer
 Others

16. Sitecore Messaging
Framework

18. What is this?
 Supports message-based communication in Sitecore
 Wraps the Rebus Library
 Introduced in 9.0.1 (Only SQL Transport)
 Azure Service Bus support later
 Part of the XP, not part of the XM configuration

20. Related Configurations
Image Source: https://doc.sitecore.com/developers/100/sitecore-experience-platform/en/xconnect-and-the-xdb.html
<add name="messaging" connectionString="..." />
<add key="messagingTransport:define" value="AzureServiceBus" />
<add key="messagingTransport:define" value="SQL" />
Web.config
ConnectionStrings.config
App_Config/Sitecore/Messaging
• Sitecore.Messaging.config
• Sitecore.Messaging.Azure.config
• Sitecore.Messaging.SQL.config

21. Sitecore Messaging Framework
Implementation

22. Implementation
 https://github.com/Mitya88/SitecoreMessagingSamples
 Nuget Packages
 Sitecore.Framework.Messaging.Abstractions
 Sitecore.Framework.Messaging.Configuration

23. Implementation

25. Implementation

26. Implementation

27. Sending
(CM
Only)

30. Queue implementation
 Create the message contract class
 Create the Bus class
 Initialize the Bus connection
 Implement sending and reciving.

31. Other options
 The demo showed the CM-CD communication
 Use it on standalone setup for async processing
 Use it on another roles/external application (Rebus)

32. Topic implementation

33. Topic implementation
 Create the message contract class
 Create the Bus class
 Initialize the Bus connection
 Implement sending and reciving.

37. Demo time!

38. Thank you
 Questions?
 https://twitter.com/mitya_1988
 https://medium.com/@mitya_1988
 https://github.com/Mitya88/SitecoreMessagingSamples