A practical guide for implementing Continuous Integration in riastanufulthep.ga .. [ Duvall] Continuous Integration Anti-Patterns by Paul Duvall. Duvall Paul M., Matyas Steve, Glover Andrew. Continuous Integration: Improving Software Quality and Reducing Risk. Файл формата pdf; размером 4,05 МБ. Добавлен пользователем trsl by Andrew Glover, Steve Matyas, Paul M. Duvall The key, as the authors show, is to integrate regularly and often using continuous integration (CI) practices.

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    Continuous Integration Paul Duvall Pdf

    Continuous integration (CI) tools integrate code changes by auto- . According to Duvall et al. .. [9] Paul Duvall, Stephen M. Matyas, and Andrew Glover. Continuous Integration. Dave Matthews. Continuous Integration. Improving Software Quality and Reducing Risk. Paul M. Duvall. Paul M. Duvall - Continuous Integration: Improving Software Quality and Reducing Risk. Actions. Johannes Hofmeister added Paul M. Duvall - Continuous.

    Improving Software Quality and Reducing Risk by Paul Duvall, Steve Matyas, and Andrew Glover In my early days in the software industry, one of the most awkward and tense moments of a software project was integration. Modules that worked individually were put together and the whole usually failed in ways that were infuriatingly difficult to find. Yet in the last few years, integration has largely vanished as a source of pain for projects, diminishing to a non-event. The essence of this transformation is the practice of integrating more frequently. At one point a daily build was considered to be an ambitious target. Most projects I talk to now integrate many times a day. Oddly enough it seems that when you run into a painful activity, a good tip is to do it more often. One of the interesting things about Continuous Integration is how often people are surprised by the impact that it has. We often find people dismiss it as a marginal benefit, yet it can bring an entirely different feel to a project. There is a much greater sense of visibility, because problems are detected faster. Since there is less time between introducing a fault and discovering you have it, the fault easier to find because you can easily look at what's changed to help you find the source. Coupled with a determined testing program, this can lead to a drastic reduction in bugs.

    Always Pull Master and Build - Developers should pull the latest code into their branch from master before pushing committed code.

    After pulling master into their own branch, they should run unit tests and build locally to ensure nothing pulled from master breaks their code. This also allows the developer a chance to fix conflicts that result from the merge before the merge gets to master. Developers should avoid pulling master into their own branch while it is broken.

    Development time could be wasted by other developers struggling with bad code that will be changed shortly. Pattern Fix build errors as soon as they occur. Anti-Patterns Allowing problems to stack up build entropy or waiting for them to be fixed in future builds. Developer Documentation The build process is an excellent opportunity to generate documentation for your source code. Developers tend to dislike writing documentation manually, and keeping documentation up to date manually can be time-consuming.

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    The preferred approach is to incorporate documentation into your code, and then having the build process generate documentation from the code. This keeps documentation up-to-date and does not create more work for the development team.

    Pattern Generate developer documentation with builds based on checked-in source code. Anti-Patterns Manually generating developer documentation. This is both a burdensome process and one in which the information becomes useless quickly because it does not reflect the checked-in source code. Section 5 Build Configuration Independent Build Builds should happen the same way on all machines that run them.

    A build on a developer machine should run the same procedure as the CI server. Therefore, train developers to not use the IDE build process.

    Paul M. Duvall - Continuous Integration : Improving Software Quality and Reducing Risk

    Every project should include its own build scripts so it can be built from anywhere it is being worked on. These build scripts will be executed by a CI system as well so that software is built at every change. Build cannot run from the command line. Single Command Running a project build should be as simple as possible.

    It is best to have a simple CLI command that can run everything required for a build in the correct order. This ensures that both developers and servers use the exact same code in the exact same order.

    A single command-invoked build script can also be kept up to date with the current state of the project. Build, compile, and testing phases can be time consuming for a developer.

    Continuous Integration

    In order to support the development team, provide flags on the CLI command to limit the build process to fit their needs. For example, a developer might be updating a class and only needs to compile the code. They are not at a point where they need to test and build the whole project.

    Most projects I talk to now integrate many times a day.

    Oddly enough it seems that when you run into a painful activity, a good tip is to do it more often. One of the interesting things about Continuous Integration is how often people are surprised by the impact that it has. We often find people dismiss it as a marginal benefit, yet it can bring an entirely different feel to a project.

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    There is a much greater sense of visibility, because problems are detected faster. Since there is less time between introducing a fault and discovering you have it, the fault easier to find because you can easily look at what's changed to help you find the source.

    Duvall, Steve Matyas Publisher: Continuous Integration reduces risk as integration problems are small as small as the integration frame and detected early Of course, it's not the same to integrate 4 hours of work to integrating 3 days of work with a mainline that surely contains much more It helps reducing risk and improves feedback which leads to a product with better quality.

    Release It: It's no secret that most or all of Agile practices are aimed at reducing risk and improving the feedback cycle, right? I blogged 11 reasons for Continuous Integration. One of the interesting things about Continuous Integration is how often people are surprised by the impact that it has.

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