What is Jenkins?

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Jenkins is a open source CI/CD tool written in Java. Its an automation software to build and deliver software projects. A major benifit is it has a lot of plugins, open source, free and popular.

What is CI/CD?

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Continous Integration(CI) is a practice of merging multiple developer working copies to a shared machine several times a day.

Continous Delivery(CD) is a software engineering approach by which teams can deliver software in short cycles, ensuring that they can be reliabily released any time

In practice

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Verify and Publish work by triggering automated builds and tests.

• For every commit or atleast once a day.
• All developers push the code to a version control, which should then be built and tested - which will be done with Jenkins.
• Jenkins doesn’t merge code or resolve any conflicts, these are still left to the developers.

Benefits

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• Provides a quick feedback loop for the developer to fix build errors.
• Jenkins can publish every build of the application

CI/CD within SDLC

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Jenkins alternatives

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• GitHub Actions
• GitLab
• AWS CodePipeLine
• JetBrains TeamCity
• Spinnaker