Spring Boot Tutorial 0/110 lessons ~6 min read Lesson 81“Production-grade backends”

Jenkins Basics

Jenkins is the legacy CI workhorse — still everywhere in enterprises.

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Focus

2 guided sections

Practice signal

Examples included

Career prep

Foundation builder

Introduction

Jenkins is the legacy CI workhorse — still everywhere in enterprises. Knowing a Jenkinsfile is mandatory for many backend roles.

Informative example

bash

// Jenkinsfile (declarative)
pipeline {
  agent any
  tools { jdk 'temurin-21' }
  stages {
    stage('Build')  { steps { sh './mvnw -B clean package -DskipTests' } }
    stage('Test')   { steps { sh './mvnw -B test' }
                      post { always { junit 'target/surefire-reports/*.xml' } } }
    stage('Image')  { when { branch 'main' }
                      steps { sh './mvnw spring-boot:build-image -Dspring-boot.build-image.imageName=registry.acme.com/orders:${env.BUILD_NUMBER}' } }
    stage('Deploy') { when { branch 'main' }
                      steps { sh 'kubectl set image deployment/orders app=registry.acme.com/orders:${env.BUILD_NUMBER}' } }
  }
}

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