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  • Book Overview & Buying Learning NServiceBus - Second Edition
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Learning NServiceBus - Second Edition

Learning NServiceBus - Second Edition - Second Edition

By : David Boike
4.8 (6)
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Learning NServiceBus - Second Edition

Learning NServiceBus - Second Edition

4.8 (6)
By: David Boike
Buy this Book

Overview of this book

If you are a .NET developer who wants to eliminate the problems related to defective third-party web service integration or batch job failures, then this is the book for you. It is also perfect for those of you who are new to NServiceBus and service-oriented architecture and would like to learn how you can streamline all of your development efforts.
Table of Contents (12 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
Lock Free Chapter
1
1. Getting on the IBus
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1. Getting on the IBus
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Why use NServiceBus?
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Getting the code
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Our first example
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Creating a message assembly
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Creating a service endpoint
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Creating a message handler
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Sending a message from an MVC application
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Running the solution
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Summary
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2. Messaging Patterns
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2. Messaging Patterns
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Commands versus events
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Events
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Message routing
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Summary
3
3. Preparing for Failure
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3. Preparing for Failure
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Fault tolerance and transactional processing
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Error queues and replay
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Messages that expire
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Auditing messages
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Web service integration and idempotence
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Summary
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4. Hosting
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4. Hosting
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Hosting types
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Assembly scanning
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Choosing an endpoint name
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Dependency injection
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Message transport
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Persistence
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Message serialization
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Transactions
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Purging the queue on startup
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Installers
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Startup
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Summary
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5. Advanced Messaging
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5. Advanced Messaging
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Unobtrusive mode
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Message versioning
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Specifying the handler order
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Message actions
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Property encryption
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Transporting large payloads
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Exposing web services
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Summary
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6. Sagas
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6. Sagas
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Long-running processes
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Defining a saga
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Finding saga data
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Ending a saga
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Dealing with time
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Design guidelines
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Persistence concerns
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Unit testing
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Scheduling
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Summary
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7. Advanced Configuration
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7. Advanced Configuration
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Extending NServiceBus
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Dependency injection
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Unit of work
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Message mutators
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The NServiceBus pipeline
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Outbox
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Summary
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8. The Service Platform
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8. The Service Platform
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ServiceControl
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ServiceInsight
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ServicePulse
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ServiceMatrix
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Summary
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9. Administration
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9. Administration
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Service installation
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Profiles
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Managing configurations
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Monitoring performance
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Scalability
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Multiple sites
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Virtualization
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Transport administration
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Summary
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10. Where to Go from Here?
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10. Where to Go from Here?
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What we've learned
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What next?
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Index
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Index

Fault tolerance and transactional processing

In order to understand the fault tolerance we gain from using NServiceBus, let's first consider what happens without it.

Let's order something from a fictional website and watch what might happen to process that order. On our fictional website, we add Batman Begins to our shopping cart and then click on the Checkout button. While our cursor is spinning, the following process is happening:

  1. Our web request is transmitted to the web server.
  2. The web application knows it needs to make several database calls, so it creates a new transaction scope.
  3. Database Call 1 of 3: The shopping cart information is retrieved from the database.
  4. Database Call 2 of 3: An Order record is inserted.
  5. Database Call 3 of 3: We attempt to insert OrderLine records, but instead get Error Message: Transaction (Process ID 54) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
  6. This exception causes the transaction...
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Learning NServiceBus - Second Edition
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