"Exploring CQRS and Event Sourcing" Free 377 page eBook from Microsoft Patterns and Practices

Microsoft Downloads - Book Download: Exploring CQRS and Event Sourcing

A journey into high scalability, availability and maintainability with Windows Azure

Version:1.0
Date published: 9/26/2012

Language:English

CQRS_Journey_Guide.pdf, 33.9 MB

Overview

Authors: Dominic Betts, Julián Domínguez, Grigori Melnik, Fernando Simonazzi, Mani Subramanian.
Foreword by Greg Young.

This guide is focused on building highly scalable, highly available, and maintainable applications with the Command & Query Responsibility Segregation and the Event Sourcing architectural patterns. It presents a learning journey, not definitive guidance. It describes the experiences of a development team with no prior CQRS proficiency in building, deploying (to Windows Azure), and maintaining a sample real-world, complex, enterprise system to showcase various CQRS and ES concepts, challenges, and techniques. The development team did not work in isolation; we actively sought input from industry experts and from a wide group of advisors to ensure that the guidance is both detailed and practical.

The CQRS pattern and event sourcing are not mere simplistic solutions to the problems associated with large-scale, distributed systems. By providing you with both a working application and written guidance, we expect you'll be well prepared to embark on your own CQRS journey.

The guide is split into three distinct sections that you can read independently: a description of the journey we took as we learned about CQRS, a collection of CQRS reference materials, and a collection of case studies that describe the experiences other teams have had with the CQRS pattern.

Also from the PDF;

Why we created this guidance now

The Command Query Responsibility Segregation (CQRS) pattern and event sourcing (ES) are currently generating a great deal of interest from developers and architects who are designing and building large-scale, distributed systems. There are conference sessions, blogs, articles, and frameworks all dedicated to the CQRS pattern and to event sourcing, and all explaining how they can help you to improve the maintainability, testability, scalability, and flexibility of your systems. However, like anything new, it takes some time before a pattern, approach, or methodology is fully understood and consistently defined by the community and has useful, practical guidance to help you to apply or implement it.

This guidance is designed to help you get started with the CQRS pattern and event sourcing. It is not intended to be the guide to the CQRS pattern and event sourcing, but a guide that describes the experiences of a development team in implementing the CQRS pattern and event sourcing in a realworld application. The development team did not work in isolation; they actively sought input from industry experts and from a wider group of advisors to ensure that the guidance is both detailed and practical.

The CQRS pattern and event sourcing are not mere simplistic solutions to the problems associated with large-scale, distributed systems. By providing you with both a working application and written guidance, we expect you’ll be well prepared to embark on your own CQRS journey.

In short, if you're interested in learning more about CQRS, get this free PDF...

 

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