Zero to Service Bus in an Hour Ian Philpot, CBA

Ian Philpot, CBA tripdubroot.com @tripdubroot

Tell me about Service Bus

Azure Service Bus Azure Service Bus Relay Queue Topic Notification Hub 6/1/2019 Azure Service Bus Azure Service Bus Relay NAT and Firewall Traversal Service Request/Response Services Unbuffered with TCP Throttling Queue Transactional Cloud AMQP/HTTP Broker High-Scale, High-Reliability Messaging Sessions, Scheduled Delivery, etc. Topic Transactional Message Distribution Up to 2000 subscriptions per Topic Up to 2K/100K filter rules per subscription https://azure.microsoft.com/en-us/documentation/learning-paths/service-bus/ Notification Hub High-scale notification distribution Most mobile push notification services Millions of notification targets Event Hub Cloud-scale telemetry ingestion from websites, apps, and devices © 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

How is the Cloud different? On-Premises IaaS PaaS SaaS Networking Hardware Physical Security Operating System Middleware Virtualization Data Applications Users Customer Responsibility Microsoft Responsibility

What do these three cloud types of cloud have in common? 6/1/2019 9:50 AM What do these three cloud types of cloud have in common? They are all Services © Microsoft Corporation. All rights reserved.

None of them is a physical server that you or your customer own or even rent / have access to.

The Cloud is not Hosting

The cloud is an vast distributed system Coupling is the weakness of all distributed systems

What exactly is coupling? Unexpected cohesion / dependencies between components in a system that restrict it’s ability to change Time based or temporal Contract or format Location or endpoint Sequence or order (of calls)

How do you balance the need to connect with the risks of tight coupling? Service Bus

Service Bus is the lines on every Cloud Architecture Visio you have ever seen…

Internally we have some big customers Visual Studio Online SharePoint Online (and on prem /w Workflow) Bing Maps Microsoft IT - a LOT

Decoupling Security Queues use Shared Access Signatures A Policy is the access mechanism Name, Key, Permission (Send / Receive / Manage) Tokens are made from Name, Key, URI, Exp Time Sender & Receiver never directly talk Sender and Receiver can change tokens and implementations without either knowing

Decoupling format boundaries All messages are BrokeredMessage class Body is a binary stream Properties is a typed user property bag This is a powerful way to describe the contents of the message and processing / routing data Good ideas: Encoding / format / schema / version There are also System Properties Enqueued time, Sequence number, etc.

Decoupling time boundaries Sender and Receiver never need to be online together They can also work at independent rates, using the queue as a buffer Messages can have a future enqueue time TimeToLive can be set on a message or a queue

Decoupling error handling All queues have a Dead Letter for non-deliverable messages By default this means 10 failed Receive attempts Can also be enabled for expired messages (TTL) Headers now contain a failure reason (so you can decide what to do)

Styles of Communication

6/1/2019 9:50 AM Queues Service Bus queues support a brokered messaging communication model components of a distributed application do not communicate directly with each other https://azure.microsoft.com/en-us/documentation/articles/service-bus-fundamentals-hybrid- solutions/#queues © Microsoft Corporation. All rights reserved.

Topics and Subscriptions 6/1/2019 9:50 AM Topics and Subscriptions Service Bus topics and subscriptions support a publish/subscribe messaging communication model topics and subscriptions provide a "one-to-many" form of communication https://azure.microsoft.com/en-us/documentation/articles/service-bus-fundamentals-hybrid-solutions/#topics © Microsoft Corporation. All rights reserved.

6/1/2019 9:50 AM Relays Enables hybrid applications that run in both an Azure datacenter and your own on-premises enterprise environments https://azure.microsoft.com/en-us/documentation/articles/service-bus-fundamentals-hybrid-solutions/#relays © Microsoft Corporation. All rights reserved.

When do I use the services?

Build reliable and elastic cloud apps 6/1/2019 9:50 AM Build reliable and elastic cloud apps Dynamic demand is a reality for today's applications Modern applications must deal gracefully with spikes in load that can be both uncertain or expected Scale easily and recover from spikes or momentary outages of components. https://azure.microsoft.com/en-us/documentation/articles/service-bus-build-reliable-and-elastic-cloud-apps/ © Microsoft Corporation. All rights reserved.

Connect millions of things to the cloud 6/1/2019 9:50 AM Connect millions of things to the cloud Smart and connected "things" increasingly proliferate in modern technology ecosystems. Sensors in cars, homes, infrastructure, and appliances Microsoft Azure Service Bus and Event Hubs can help you connect this emerging "Internet of things." https://azure.microsoft.com/en-us/documentation/articles/service-bus-connect-millions-of-things/ https://azure.microsoft.com/en-us/campaigns/mydriving/ © Microsoft Corporation. All rights reserved.

Bridge cloud and on-premises services 6/1/2019 9:50 AM Bridge cloud and on-premises services Hybrid cloud/on-premises applications are a reality of modern IT environments. Create reliable and secure solutions to augment and expand your current infrastructure. https://azure.microsoft.com/en-us/documentation/articles/service-bus-hybrid-applications-spanning-cloud- and-premises/ © Microsoft Corporation. All rights reserved.

Get started

6/1/2019 9:50 AM How to use queues string connectionString = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ConnectionString"); QueueClient Client = QueueClient.CreateFromConnectionString(connectionString, "TestQueue"); Client.Send(new BrokeredMessage()); https://azure.microsoft.com/en-us/documentation/articles/service-bus-dotnet-how-to-use-queues/ © Microsoft Corporation. All rights reserved.

6/1/2019 9:50 AM How to use topics string connectionString = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ConnectionString"); TopicClient Client = TopicClient.CreateFromConnectionString(connectionString, "TestTopic"); Client.Send(new BrokeredMessage()); https://azure.microsoft.com/en-us/documentation/articles/service-bus-dotnet-how-to-use-topics- subscriptions/ © Microsoft Corporation. All rights reserved.

How to use relays //Host 6/1/2019 9:50 AM How to use relays //Host ServiceHost sh = new ServiceHost(typeof(ProblemSolver)); sh.Open(); //Client var cf = new ChannelFactory<IProblemSolverChannel>("solver"); using (var ch = cf.CreateChannel()) {…} https://azure.microsoft.com/en-us/documentation/articles/service-bus-dotnet-how-to-use-relay/ © Microsoft Corporation. All rights reserved.

Demo Service Bus QuickStarts 6/1/2019 9:50 AM Visual Studio > File > New Project > QuickStarts © Microsoft Corporation. All rights reserved.

Demo Request/response with queues 6/1/2019 9:50 AM https://code.msdn.microsoft.com/Brokered-Messaging-Request-0ce8fcaf © Microsoft Corporation. All rights reserved.

Demo Service Bus Explorer 6/1/2019 9:50 AM https://code.msdn.microsoft.com/windowsapps/Service-Bus-Explorer-f2abca5a © Microsoft Corporation. All rights reserved.