Continuous Delivery: Reliable Software Releases through Build, Test, and Deployment Automation (Addison-Wesley Signature Series (Fowler)) Review

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(More customer reviews)This is one of the most important software books published in years. From the beginning and throughout the book, the authors emphasize the importance in establishing one delivery team consisting of various experts throughout the software lifecycle - developers, DBAs, Systems/Operations, network specialists, testers and so on. The overarching pattern the authors describe is the Deployment Pipeline, which is basically a staged process consisting of all of the steps to go from bare/virtual metal to a working system whenever there is a change to source files. Of course, the only way this can be done is through copious amounts of automation. The other key point the authors make is that this automated delivery system - itself - is versioned with every change. Not just the custom source code, but also the operating system(s), tools, configuration and everything necessary to create a working software system - a crucial aspect of the Deployment Pipeline.
To sum up key points from the book in a few bullets:
* The purpose of Continuous Delivery is to reduce the cycle time between an idea and usable software
* Automate (almost) everything necessary to create usable software
* Version complete software systems (not just source code) for every change committed to version control system
* Employ a Deployment Pipeline in which the entire system is recreated whenever a change is committed to the version-control system and provide continuous feedback
* Identify one delivery team consisting of various delivery experts - build, deploy, provisioning, database, testing, etc. - a concept emphasized in the DevOps movement
The authors go into great detail in describing each of these themes. So, if you want the process of delivering software to any target environment - including production - to be a click of a button and something that can be accomplished as often as the business requires, get this book. When you employ the practices in this book, no longer will you need to artificially throttle changes delivered to users for months or even years because of the expense and risk required to deliver software.

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Getting software released to users is often a painful, risky, and time-consuming process.This groundbreaking new book sets out the principles and technical practices that enablerapid, incremental delivery of high quality, valuable new functionality to users. Throughautomation of the build, deployment, and testing process, and improved collaboration betweendevelopers, testers, and operations, delivery teams can get changes released in a matter of hours—sometimes even minutes–no matter what the size of a project or the complexity of its code base.Jez Humble and David Farley begin by presenting the foundations of a rapid, reliable, low-riskdelivery process. Next, they introduce the “deployment pipeline,” an automated process formanaging all changes, from check-in to release. Finally, they discuss the “ecosystem” needed tosupport continuous delivery, from infrastructure, data and configuration management to governance.The authors introduce state-of-the-art techniques, including automated infrastructure managementand data migration, and the use of virtualization. For each, they review key issues, identify bestpractices, and demonstrate how to mitigate risks. Coverage includes• Automating all facets of building, integrating, testing, and deploying software• Implementing deployment pipelines at team and organizational levels• Improving collaboration between developers, testers, and operations• Developing features incrementally on large and distributed teams• Implementing an effective configuration management strategy• Automating acceptance testing, from analysis to implementation• Testing capacity and other non-functional requirements• Implementing continuous deployment and zero-downtime releases• Managing infrastructure, data, components and dependencies• Navigating risk management, compliance, and auditingWhether you’re a developer, systems administrator, tester, or manager, this book will help yourorganization move from idea to release faster than ever—so you can deliver value to your businessrapidly and reliably.

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