Learning NServiceBus - Second Edition

David Boike

• Editore: Packt Publishing
• Anno: 2015
• ISBN:
  9781784392925
• Argomento: Computer Science
• Categoria: Entreprise Applications

Learning NServiceBus Second Edition

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Table of Contents

Learning NServiceBus Second Edition

Credits

Foreword

Early influences

Starting with MSMQ

What open source meant in those days

Clouds on the horizon

Unexpected success

Fast-forward to today

Back to David, and this book

About the Author

About the Reviewers

www.PacktPub.com

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Getting on the IBus

Why use NServiceBus?

Getting the code

NServiceBus NuGet packages

Our first example

Creating a message assembly

Creating a service endpoint

Creating a message handler

Sending a message from an MVC application

Creating the MVC website

Running the solution

Summary

2. Messaging Patterns

Commands versus events

Eventual consistency

Achieving consistency with messaging

Events

Publishing an event

Subscribing to an event

Message routing

Summary

3. Preparing for Failure

Fault tolerance and transactional processing

Error queues and replay

Automatic retries

Replaying errors

Second-level retries

RetryDemo

Messages that expire

Auditing messages

Web service integration and idempotence

Summary

4. Hosting

Hosting types

NServiceBus-hosted endpoints

Self-hosted endpoints

Assembly scanning

Choosing an endpoint name

Dependency injection

Message transport

Reasons to use a different transport

MSMQ

RabbitMQ

SQL Server

Windows Azure

Persistence

In-memory persistence

NHibernate

RavenDB

Windows Azure

Polyglot persistence

Message serialization

Transactions

Purging the queue on startup

Installers

Startup

Send-only endpoints

Summary

5. Advanced Messaging

Unobtrusive mode

TimeToBeReceived attribute

Message versioning

Polymorphic dispatch

Events as interfaces

Specifying the handler order

Message actions

Stopping a message

Deferring a message

Forwarding messages

Message headers

Property encryption

Transporting large payloads

Exposing web services

Summary

6. Sagas

Long-running processes

Defining a saga

Finding saga data

Ending a saga

Dealing with time

Design guidelines

Business logic only

Saga lifetime

Saga patterns

Messages that start sagas

Retraining business stakeholders

Persistence concerns

RavenDB

NHibernate

Azure

Unit testing

Testing events as interfaces

Scheduling

Summary

7. Advanced Configuration

Extending NServiceBus

IConfigureThisEndpoint

INeedInitialization

IWantToRunWhenBusStartsAndStops

Dependency injection

Unit of work

Message mutators

The NServiceBus pipeline

Building behaviors

Ordering behaviors

Replacing behaviors

The pipeline context

Outbox

DTC 101

Life without distributed transactions

Outbox configuration

Session sharing

Summary

8. The Service Platform

ServiceControl

ServiceInsight

Endpoint Explorer

Messages

Main view

Flow Diagram

Saga

Sequence Diagram

Other tabs

ServicePulse

Endpoint activity

Failed messages

Custom checks

Getting notified

ServiceMatrix

Summary

9. Administration

Service installation

Infrastructure installers

Side-by-side installation

Profiles

Environmental profiles

Feature profiles

Customizing profiles

Logging profiles

Customizing the log level

Managing configurations

Monitoring performance

Scalability

Scaling up

Scaling out

Decommissioning a MSMQ worker

Extreme scale

Multiple sites

Virtualization

MSMQ message storage

Clustering

Transport administration

Summary

10. Where to Go from Here?

What we've learned

What next?

Index

Learning NServiceBus Second Edition

Copyright © 2015 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: August 2013

Second edition: January 2015

Production reference: 1250115

Published by Packt Publishing Ltd.

Livery Place

35 Livery Street

Birmingham B3 2PB, UK.

ISBN 978-1-78439-292-5

www.packtpub.com

Credits

Author

David Boike

Reviewers

Prashant Brall

Roy Cornelissen

Hadi Eskandari

Daniel Marbach

Commissioning Editor

Dipika Gaonkar

Acquisition Editor

Larissa Pinto

Content Development Editor

Kirti Patil

Technical Editor

Chinmay S. Puranik

Copy Editors

Dipti Kapadia

Vikrant Phadke

Project Coordinator

Kranti Berde

Proofreaders

Simran Bhogal

Maria Gould

Ameesha Green

Bernadette Watkins

Indexer

Monica Ajmera Mehta

Graphics

Sheetal Aute

Abhinash Sahu

Production Coordinators

Arvindkumar Gupta

Nilesh R. Mohite

Cover Work

Arvindkumar Gupta

Nilesh R. Mohite

Foreword

Unlike many people who write a foreword for a book, I have myself not actually written a book yet, so I am probably going about this the wrong way. Also, of all the books that I have read, I have almost never read the foreword, which makes me wonder who is actually reading this.

That being said, I think that 10 years of blogging has actually prepared me very well to write this foreword, and it will end up being roughly as long as my regular blog posts.

In any case, I am extremely happy to see how well the first edition of this Learning NServiceBus book has done, and when David asked me to write the foreword for this second edition, I was more than willing to oblige.

Now that you've picked up this book, I think it's fair to assume that you have heard something about NServiceBus, maybe even downloaded it, played with it, or used it on a project or two. What you might not know is the story of how it all began and how we ended up where we are today—seeing the second edition of Learning NServiceBus being published.

Early influences

Almost 15 years ago, I was working as a developer on a gigantic command and control system developed in a language called Ada. This is what Wikipedia has to say about Ada:

"[Ada] has built-in language support for explicit concurrency, offering tasks, synchronous message passing, protected objects, and non-determinism."

These were very important attributes for a system that needed to be super reliable, highly performant, and very scalable. Little did I realize at that time how profound an effect this relatively unknown programming language would have on the rest of my career.

In my next company, a software development firm—the kind that does turnkey projects for its customers—I continued my focus on command and control systems, this time using the fairly new .NET platform from Microsoft. The thing was that many of the abilities that I'd come to rely on in Ada were (to me) curiously absent from .NET.

Like any good craftsman who has gotten used to a certain tool, I started looking around for a replacement, and when I couldn't find one, I went and made it myself.

Starting with MSMQ

Although the main message from Microsoft at the time was all about XML Web Services an...