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I DEPLOY ON
 FRIDAYS
 (AND MAYBE YOU SHOULD TOO) MICHIEL ROOK
 @MICHIELTCS

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@michieltcs

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@michieltcs DEPLOYING

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@michieltcs ON A FRIDAY

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@michieltcs

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@michieltcs DEPLOYING?

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@michieltcs ON A
 FRIDAY??

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@michieltcs

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@michieltcs BUT WHY?

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@michieltcs TRADITION

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@michieltcs RISK

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@michieltcs CONTROL

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@michieltcs CONFIDENCE & TRUST

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@michieltcs TIME TO REPAIR / RECOVER

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@michieltcs ON-CALL

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@michieltcs SO

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@michieltcs DON'T DEPLOY ON A FRIDAY!

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@michieltcs I USED TO SAY THAT TOO

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@michieltcs I LIKE MY WEEKENDS

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@michieltcs AND MY EVENINGS

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@michieltcs WHAT ABOUT BUGS?

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@michieltcs WHAT ABOUT 3 PM?

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@michieltcs WHAT ABOUT THURSDAY?

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@michieltcs FRIDAY IS 20%
 OF THE WEEK

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@michieltcs IMPROVE!

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@michieltcs IF IT HURTS
 DO IT MORE OFTEN

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@michieltcs FAILURE IS NOT
 THE OPPOSITE OF SUCCESS

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SUCCESS CONSISTS OF GOING FROM FAILURE TO FAILURE WITHOUT LOSS OF ENTHUSIASM. Winston Churchill

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@michieltcs BIG STEPS

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@michieltcs FAIL BIG

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@michieltcs SMALL STEPS

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@michieltcs FAIL SMALL

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@michieltcs MAKE IT EFFORTLESS

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@michieltcs REDUCE RISK

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@michieltcs $ = REALIZED VALUE
 CREDITS TO @FGOULDING

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@michieltcs CONTINUOUS EVERYTHING

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@michieltcs DELIVERING VALUE TO USERS

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@michieltcs SAFELY & QUICKLY

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@michieltcs IN A SUSTAINABLE WAY

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@michieltcs DEV BUILD / TEST ACCEPTANCE PRODUCTION CONTINUOUS DELIVERY

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@michieltcs CODE IS ALWAYS
 IN A RELEASABLE STATE

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@michieltcs DEV BUILD / TEST ACCEPTANCE PRODUCTION CONTINUOUS DEPLOYMENT

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@michieltcs HIGH VS. LOW PERFORMING TEAMS Source: Accelerate - The Science Of DevOps

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@michieltcs SO

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@michieltcs IF YOU CAN DEPLOY
 ON FRIDAY

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@michieltcs AT 5 PM

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@michieltcs YOU CAN DEPLOY
 ANY TIME

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@michieltcs BUT OUR CODE IS OLD

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@michieltcs BUT OUR CODE IS NOT UNDER TEST

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@michieltcs BUT OUR CODE IS IMPOSSIBLE TO CHANGE

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@michieltcs DEALING WITH "LEGACY"

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@michieltcs STRANGLER PATTERN

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@michieltcs ORIGINAL MONOLITH DB @michieltcs

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@michieltcs ORIGINAL MONOLITH PROXY SERVICE ORIGINAL MONOLITH DB DB DB @michieltcs

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@michieltcs ORIGINAL MONOLITH PROXY SERVICE ORIGINAL MONOLITH ORIGINAL MONOLITH SERVICE SERVICE SERVICE PROXY DB DB DB DB DB DB @michieltcs

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@michieltcs BRANCH BY ABSTRACTION

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@michieltcs CLIENT OLD MODULE CLIENT CLIENT @michieltcs

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@michieltcs CLIENT ABSTRACTION LAYER OLD MODULE CLIENT CLIENT @michieltcs

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@michieltcs CLIENT ABSTRACTION LAYER OLD MODULE CLIENT CLIENT @michieltcs

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@michieltcs CLIENT ABSTRACTION LAYER OLD MODULE CLIENT CLIENT ABSTRACTION LAYER NEW MODULE @michieltcs

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@michieltcs CLIENT ABSTRACTION LAYER OLD MODULE CLIENT CLIENT ABSTRACTION LAYER NEW MODULE @michieltcs

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@michieltcs CLIENT ABSTRACTION LAYER CLIENT CLIENT NEW MODULE @michieltcs

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@michieltcs CLIENT NEW MODULE CLIENT CLIENT @michieltcs

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@michieltcs ON BRANCHES

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@michieltcs CONFLICTS

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@michieltcs "This pull request affects 31 files...
 could be a lot of conflicts if we don't merge it soon"

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@michieltcs

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@michieltcs CONTINUOUS INTEGRATION

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@michieltcs INTEGRATE TO MASTER
 AT LEAST DAILY

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@michieltcs DELAYING INTEGRATION

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@michieltcs MERGING FEATURES?

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@michieltcs DECOUPLE
 DEPLOYMENTS FROM RELEASES

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@michieltcs FEATURE TOGGLES

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@michieltcs

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@michieltcs @michieltcs

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@michieltcs FEATURE TOGGLE DEBT

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@michieltcs BRANCHING STRATEGIES

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@michieltcs BRANCHING STRATEGIES 1. DON'T BRANCH

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@michieltcs BRANCHING STRATEGIES 1. DON'T BRANCH 2. DON'T BRANCH

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@michieltcs BRANCHING STRATEGIES 1. DON'T BRANCH 2. DON'T BRANCH 3. DON'T BRANCH

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@michieltcs

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@michieltcs TRUNK
 BASED DEVELOPMENT

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@michieltcs SHORT LIVED
 FEATURE BRANCHES?

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@michieltcs PULL REQUESTS?

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@michieltcs CODE REVIEWS ARE USEFUL

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@michieltcs BUT: FLOW DELAY

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PAIR PROGRAMMING

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@michieltcs CONTINUOUS INLINE
 CODE REVIEW

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MOB PROGRAMMING

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@michieltcs PIPELINES

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@michieltcs AUTOMATION

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@michieltcs AUTOMATION
 AUTOMATION

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@michieltcs AUTOMATION
 AUTOMATION
 AUTOMATION

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@michieltcs COMPILE CHECKOUT TEST PACKAGE

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@michieltcs COMPILE CHECKOUT TEST PACKAGE

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@michieltcs COMPILE CHECKOUT TEST PACKAGE

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@michieltcs COMPILE CHECKOUT TEST PACKAGE

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@michieltcs COMPILE CHECKOUT TEST PACKAGE

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@michieltcs DEPLOY ACC VERIFY ACC DEPLOY PROD VERIFY PROD

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@michieltcs DEPLOY ACC VERIFY ACC DEPLOY PROD VERIFY PROD

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@michieltcs DEPLOY ACC VERIFY ACC DEPLOY PROD VERIFY PROD

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@michieltcs DEPLOY ACC VERIFY ACC DEPLOY PROD VERIFY PROD

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@michieltcs DEPLOY ACC VERIFY ACC DEPLOY PROD VERIFY PROD

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@michieltcs CONTINUOUS TESTING

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@michieltcs CONTINUOUS TESTING UNIT TESTS ACCEPTANCE TESTS E2E
 TESTS Cost Speed INTEGRATION TESTS

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@michieltcs CONTINUOUS TESTING UNIT TESTS ACCEPTANCE TESTS E2E
 TESTS Cost Speed Exploratory
 testing & user
 feedback Monitoring
 & alerting INTEGRATION TESTS

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@michieltcs GOOD ENOUGH

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@michieltcs NO TEST SUITE DETECTS EVERY ISSUE

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@michieltcs PIPELINE SPEED = KEY

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@michieltcs DEPLOYMENTS

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@michieltcs ROLLING UPDATE

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.0 SERVICE V1.0 SERVICE V1.0 @michieltcs

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.0 SERVICE V1.0 SERVICE V1.0 SERVICE V1.1 @michieltcs

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.0 SERVICE V1.1 SERVICE V1.0 SERVICE V1.0 @michieltcs

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.0 SERVICE V1.1 SERVICE V1.0 SERVICE V1.1 @michieltcs

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.0 SERVICE V1.1 SERVICE V1.1 SERVICE V1.0 @michieltcs

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.0 SERVICE V1.1 SERVICE V1.1 SERVICE V1.1 @michieltcs

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.1 SERVICE V1.1 SERVICE V1.1 SERVICE V1.0 @michieltcs

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@michieltcs LOAD BALANCER ROLLING UPDATE SERVICE V1.1 SERVICE V1.1 SERVICE V1.1 @michieltcs

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@michieltcs pipeline {
 stages {
 stage('Run tests') {
 sh "gradle check"
 }
 
 stage('Build docker image') {
 sh "docker build -t jobservice:${env.BUILD_NUMBER} ."
 sh "docker push jobservice:${env.BUILD_NUMBER}"
 }
 
 stage('Deploy staging') {
 sh "ansible-playbook -e BUILD=${env.BUILD_NUMBER}
 -i staging deploy.yml"
 }
 
 stage('Deploy production') {
 sh "ansible-playbook -e BUILD=${env.BUILD_NUMBER}
 -i prod deploy.yml"
 }
 }
 PIPELINE AS CODE image: registry.local/runner:latest
 
 stages:
 - test
 - images
 - deploy
 
 phpunit:
 stage: test
 script:
 - bin/phpunit
 
 images:
 stage: images
 script:
 - make images publish
 only:
 - master
 
 deploy:
 stage: deploy
 script:
 - make deploy
 only:
 - master

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@michieltcs BUILD PIPELINE @michieltcs

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@michieltcs FEEDBACK!

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@michieltcs DEPLOYING

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@michieltcs ON A FRIDAY

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@michieltcs YOU CAN DO IT TOO!

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@michieltcs THANK YOU FOR LISTENING! @michieltcs / michiel@michielrook.nl www.michielrook.nl