This document discusses continuous integration (CI), including an overview of CI, its principles, and advantages and disadvantages. CI is a software development practice where developers regularly merge code changes into a central repository, which then triggers an automated build and test of the code. The principles of CI are to maintain a code repository, automate builds and deployments, make builds self-testing, commit to mainline daily, build every commit, keep builds fast, test in a production-like environment, and make builds easily accessible. Advantages are easy code reversion, early issue detection, immediate testing and feedback, while disadvantages are initial setup time and needing a test suite.

1. Lena Petsenchuk
23.04.2013
Continuous Integration

2. Agenda
 Overview of CI
 Principles of CI
 Advantages &
Disadvantages of CI

3. Continuous Integration???

4. CI Proccess
Integrated machine
notify
notify
check out
check out
check outcheck out
monitormonitor
check in
check in
check incheck in
(commit)
(commit)

5. CI Principles

6. CI Principles
 Maintain a code repository

7.  Automate the build & deployment
CI Principles

8.  Make the build self-testing
CI Principles

9.  Everyone commits to the mainline everyday
CI Principles

10.  Every commit to mainline should be built
CI Principles

11.  Keep the build fast
CI Principles

12.  Test in a clone of the production
environment
CI Principles

13.  Make it easy to get the latest executable
CI Principles

14.  Everyone can see what’s happening
CI Principles

15. Advantages of CI
Easy to revert the codebase to a bug-free state
Continuous detection and fixing of integration problems
Early warning of broken/incompatible code
Early warning of conflicting changes
Immediate unit testing of all changes
Constant availability of a "current" build
Immediate feedback
Developing modular, less complex and high - quality code

16. Disadvantages of CI
 Initial setup time required
 Well-developed test-suite
required

17. Conclusion

18. Questions