April 2022
Intermediate to advanced
341 pages
9h 37m
English
Content preview from DevOps Tools for Java Developers
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Chapter 2. The System of Truth
A complex system that works is invariably found to have evolved from a simple system that worked.
John Gall (Gall’s law)
To have an effective DevOps pipeline, it is important to have a single system of truth to understand what bits and bytes are being deployed into production. Typically, this starts with a source code management system that contains all of the source code that gets compiled and built into the production deployment. By tracing a production deployment back to a specific revision in source control, you can do root cause analysis of bugs, security holes, and performance issues.
Source code management solves several key roles in the software delivery lifecycle:
- Collaboration
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Large teams working on a single codebase would constantly get blocked by one another without effective source code management, reducing productivity as the team size grows.
- Versioning
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Source code systems let you track versions of the code to identify what is being deployed into production or released to a customer.
- History
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By keeping a chronological record of all versions of software as it is developed, it is possible to revert to an older version of the code or identify the specific change that caused a regression.
- Attribution
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Knowing who made the changes in a particular file allows you to identify ownership, assess domain expertise, and assess risk when making changes.
- Dependencies
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Source code has become the canonical source for other key ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.