ESE-13 - Software Engineering in Practice - Marc Hofer
ESE-13 - Software Engineering in Practice - Marc Hofer
ESE-13 - Software Engineering in Practice - Marc Hofer
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WHO IS TALKING?• MARC HOFER, SOFTWARE DEVELOPER• SWITZERLAND: SWISSCOM, ZUEHLKE• UK/INDIA: THOUGHTWORKS• THOUGHTWORKS UNIVERSITY TRAINER
THE WATER-SCRUM-FALL… AND WE CAN IMPROVE• AGILE RECAP• THE “WATER-SCRUM-FALL”• WATER - REQUIREMENTS ENGINEERING AND PLANNING• FALL - CONTINUOUS DELIVERY• WHAT’S IN FOR YOU
RECAP “AGILE PRACTICES IN INDUSTRY”• AGILE VS. WATERFALL• GROWING SOFTWARE• 35% OF REQUIREMENTS CHANGE
after a fewweeks or monthsWATERFALL VS AGILEPlanSpecsDesignCodeTestDeployInceptionRelease IRelease IIRelease III...Time
GROWING SOFTWAREInceptionRelease IRelease IIRelease III...
GROWING SOFTWAREBuild somefeaturesFeedbackFeedbackTime
REQUIREMENTS CHANGE35%
“IF THE SCOPE IS NOT FLEXIBLE, THEN YOURORGANISATION DOES NOT BENEFIT FROM AGILE”- gojko adzic
PlanSpecsDesignCodeTestDeploy
WATER SCRUM FALLPlanSpecs...TestDeploy
… EVEN WITH SCRUMIDEA...PLANNINGREQUIREMENTTESTINGEVALUATIONIMPLEMENTATIONANALYSE AND DESIGNDEPLOYMENT
PLANREPLACE THIS WITHMAGICDEPLOY
IT DOESN’T NEED TO BE LIKE THAT!
THE WATER… REQUIREMENTS ENGINEERING AND PLANNINGPLANSPECS
“FLEXIBLE SCOPE IS DANGEROUS WTHOUT A BIGPICTURE”- gojko adzic
ADAPTIVE PLANNING VS. PREDICTIVE PLANNING
REQUIREMENTS CHANGE35%
ROADMAP?
ROADMAP!
STORY BACKLOG
https://www.youtube.com/watch?v=r64rrgbcEHo
USER STORIES
THE FALL… CONTINUOUS DELIVERYTestDeploy
Code Test DeployTHE LAST MILE
THE LAST MILECodeCompileUnit-TestAcceptance-TestMach<strong>in</strong>eProvision<strong>in</strong>gDeployActivateRELEASE
3 MONTHS, 6 MONTHS, 12 MONTHS … WTF!?
THE LAST MILECodeCompileUnit-TestAcceptance-TestMach<strong>in</strong>eProvision<strong>in</strong>gDeployActivate$$$$$
CompileUnit-TestAcceptance-TestMach<strong>in</strong>eProvision<strong>in</strong>gDeployDEPLOYMENT PIPELINE
- mike roberts“CONTINUOUS IS MORE OFTEN THAN YOU THINK”
“HOW LONG WOULD IT TAKE YOUR ORGANISATION TO DEPLOY ACHANGE THAT INVOLVES JUST ONE SINGLE LINE OF CODE?”- mary poppendieck
CodeFEATURE BRANCHING VS.CONTINUOUS DELIVERY
Unit-TestAcceptance-Test
Deploy
ActivateFEATURE TOGGLES
Mach<strong>in</strong>eProvision<strong>in</strong>gSNOWFLAKE VS. PHOENIX SERVERS
A / BEXPERIMENTS!!!!!
METRICS
“YOU BUILT IT, YOU RUN IT!”- werner vowels (cto amazon)
… ON THE BUS
CONTINUOUS DELIVERY & LEAN ENTERPRISE
TAKEAWAY FOR YOU…… SOME PRACTICAL ADVICE
AGILE EXPERIENCELiv<strong>in</strong>gagile valuesevery dayExperienceRead/heardabout agileUs<strong>in</strong>g somepracticesBehaviour
YOUR PRACTICES• IT’S NOT JUST ABOUT SCRUM• TDD / BDD - PRACTICE IT!• PAIR PROGRAMMING• BE PART OF A X-FUNCTIONALAND DIVERSE TEAMS
X-FUNCTIONAL TEAMSPRODUCTMANAGERUX DEV QA DBA SYS ADMIN NET ADMIN
BE FAST…• MICROSERVICE ARCHITECTUREBUILD SMALL REPLACEABLE SERVICES AROUND BUSINESS CAPABILITIES - USE THE 1950s OFFICE ANALOGY• WRITE TESTS, TEST EVERYTHINGMAKE IT EASY TO WRITE GREAT TESTS• DON’T USE HEAVY-WEIGHT TOOLS… IT’S JUST EASIER TO GET UP AND RUNNING
CHOSE THE RIGHT TOOLS…• NO BIG VENDORS, NO “ENTERPRISE SOFTWARE”THERE IS A REASON WHY DOCKER AND CO. ARE SO SUCCESSFUL• RIGHT TOOLS FOR THE PROBLEME.G. NO-SQL DATABASES• MOVE TO THE CLOUDWHERE YOU FIRST NEED TO FIRE YOUR SECURITY OFFICER
IT’S NOT ABOUT CODE …https://www.youtube.com/watch?v=aNaeVQhrsyY
LEARN FROM INDUSTRY LEADERS …@jeffpatton@mart<strong>in</strong>fowler@davefarley77@tastapod@ericries@dhh@gojkoadzic@gotHighOps@olab<strong>in</strong>i
THANKS FORLISTENINGm@rc-hofer.ch
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