Jenkins

ELI5 — The Vibe Check

Jenkins is the grandpa of CI/CD tools. It's been building code since 2011 and has a plugin for literally everything. It's self-hosted, infinitely customizable, and sometimes feels like it's held together by duct tape and XML. But hey, half the world still runs on it.

Real Talk

Jenkins is an open-source automation server for building, testing, and deploying software. It uses a plugin architecture (1800+ plugins) and supports both declarative and scripted Pipelines defined in Jenkinsfiles. Widely used for on-premise CI/CD with master-agent architecture.

Show Me The Code

pipeline {
  agent any
  stages {
    stage('Build') {
      steps {
        sh 'npm ci'
      }
    }
    stage('Test') {
      steps {
        sh 'npm test'
      }
    }
  }
}

When You'll Hear This

"Our Jenkins server has been running since 2015 and nobody dares touch it." / "Jenkins plugins can do anything, but half of them haven't been updated in years."