Agile Refactoring at ImmobilienScout24

www.immobilienscout24.de Agile Refactoring @ IS24 gearconf www.immobilienscout24.de Düsseldorf | 11.10.2010
| André Neubauer & Oliver Schmitz-Hennemann

Seite 2 | agile refactoring @ IS24 gearconf 2010 |
Oliver Schmitz & André Neubauer andre.neubauer@... twitter.com/devpg devpg.com •  Team Leader IT Development •  Researcher, Speaker, Author #web #devops #mobileWeb #android #ar I‘m André Neubauer, find me at…

Oliver Schmitz & André Neubauer [email protected] twitter.com/OSchmi •  Head of IT Architecture •  OrgDev, agile evangelist, inconvenient I‘m Oliver Schmitz-Hennemann , find me at…

Oliver Schmitz & André Neubauer Warning Agile ideas ahead

Oliver Schmitz & André Neubauer Immobiliensuche gestern & heute

Oliver Schmitz & André Neubauer Some numbers 500 employees 140 IT 67 developer " > 4,5 Million unique users " > 1,5 Billion Page Impressions " > 250 Million Expose views " ~ 1,2 Million active listings " > 120.000 Vendors per month

Oliver Schmitz & André Neubauer Seite 7 Page impressions  ‏ Q 160 320 480 640 800 Jul 04 Jan 05 Jul 05 Jan 06 Jul 06 Jan 07 Jul 07 Jan 08 Jul 08 Jan 09 Page impressions Mio. 1,5 Mrd. 960 Jul 09 Jan 10

Oliver Schmitz & André Neubauer Seite 8 Availability  ‏ Q Jul 04 Jan 05 Jul 05 Jan 06 Jul 06 Jan 07 Jul 07 Jan 08 Jul 08 Jan 09 Jul 09 Jan 10 99,80% 97,00% 97,50% 98,00% 98,50% 99,00% 99,50% 100,00% Verfügbarkeit Benchmark Verfügbarkeit 99,8%

Oliver Schmitz & André Neubauer Agile refactoring

Oliver Schmitz & André Neubauer Epic Some history

Oliver Schmitz & André Neubauer Story People unhappy

Oliver Schmitz & André Neubauer To much legacy

Oliver Schmitz & André Neubauer Story Legacy

Oliver Schmitz & André Neubauer Story ARC desaster 2007/2008

Oliver Schmitz & André Neubauer ARC desaster

Oliver Schmitz & André Neubauer Lesson learned No super goals. Focus!

Oliver Schmitz & André Neubauer Lesson learned If you get stuck… Get help!

Oliver Schmitz & André Neubauer Lesson learned Get external help!

Oliver Schmitz & André Neubauer Lesson learned > 2 month You got stuck!

Oliver Schmitz & André Neubauer Lesson learned Ivory tower

Oliver Schmitz & André Neubauer Story Scrum 2008

Oliver Schmitz & André Neubauer Why Delayed projects

Oliver Schmitz & André Neubauer Why To many topics per team

Oliver Schmitz & André Neubauer Why Much more developers

Oliver Schmitz & André Neubauer Teams want it CTO wants it

Oliver Schmitz & André Neubauer How Team by team

Oliver Schmitz & André Neubauer How External help

Oliver Schmitz & André Neubauer Lesson learned Prod up! Fun up! Energy!

Oliver Schmitz & André Neubauer Lesson learned Identifies waste

Oliver Schmitz & André Neubauer A lot of impediments

Oliver Schmitz & André Neubauer Lesson learned Get’s inconvenient

Oliver Schmitz & André Neubauer Epic Agile refactoring

Oliver Schmitz & André Neubauer Setting 1/3 2 years Stop the business

Oliver Schmitz & André Neubauer Setting 1/3 2 years Don‘t stop the business

Oliver Schmitz & André Neubauer Solution Put 33% of dev into ARC renewal team

Oliver Schmitz & André Neubauer Solution But wait… …Scrum Masters will kill you

Oliver Schmitz & André Neubauer That’s inconvenient

Oliver Schmitz & André Neubauer Epic Agile refactoring

Oliver Schmitz & André Neubauer Lesson learned Do it in the teams

Oliver Schmitz & André Neubauer Lesson learned Spread Know how

Oliver Schmitz & André Neubauer

Oliver Schmitz & André Neubauer Lesson learned Involve à commit

Oliver Schmitz & André Neubauer Story Standards

Oliver Schmitz & André Neubauer Some Details Hibernate/JPA Springframework SpringMVC/WebFlow

Oliver Schmitz & André Neubauer Task Start with OODM

Oliver Schmitz & André Neubauer Old architecture Web Tier Apache Tomcat Web UTIL ConfigServlet Web Service Service Wrappers Corba Stubs web modules servlet filters Portallogic ServicePool Corba Skeletons Search Index MT UTIL Business Object ServiceImpl JSP Dialog Workflow

Oliver Schmitz & André Neubauer Target architecture

Oliver Schmitz & André Neubauer Task Second step Web-Framework migration

Oliver Schmitz & André Neubauer Story SPoC CPoC rollout

Oliver Schmitz & André Neubauer Lesson learned Have switches

Oliver Schmitz & André Neubauer Lesson learned New Features after SPoC

Oliver Schmitz & André Neubauer Lesson learned Prod up! Fun up! Energy!

Oliver Schmitz & André Neubauer Story ARC Product Owner

Oliver Schmitz & André Neubauer CTO needs control

Oliver Schmitz & André Neubauer CTO needs someone to ask?

Oliver Schmitz & André Neubauer CTO needs Someone to hang!

Oliver Schmitz & André Neubauer Task Coordinate Teams & POs

Oliver Schmitz & André Neubauer Lesson learned Fight for 1/3

Oliver Schmitz & André Neubauer OODM 34 epics

Oliver Schmitz & André Neubauer OODM 340 Stories

Oliver Schmitz & André Neubauer Lesson learned Have Mr. Pareto in the team

Oliver Schmitz & André Neubauer Lesson learned Trust in stack

Oliver Schmitz & André Neubauer Lesson learned No more big things

Oliver Schmitz & André Neubauer OODM Cockpit “Über den Berg” gelb: wir brauchen ARC-Stories (Stand 04.06.2010) Scheduler & Jobs Mailer Importer WTH? Audit Trail ESB Data Events Caching Misc. KSC Guideline machen und Team fragen Allianz Relocation Valuation Financing Im alten Stack, wird vom PM migriert/neu geschrieben Leads Im alten Stack, wird vom PM migriert/neu geschrieben BUs Fulfillment Saved search Shortlist Search Expose à PMI hat Interesse an Einführung von Expose 3.5 für alle Typen Search VÖ / Kanäle TKM Vendor Reporting Umstellung auf online reporting DB ist IT2010 Focus Placement Toplisting Angebots- & Exposé- Manager Real estates  SM2.0 √  OC1?!? Realtor Impressum Profile Offer Addresses  DEV2/API GIS Geocoding Hierarchy  DEV2 sieht Probleme Multimedia ShoppingCart Customer  OC1? Sonst Gerald SPC Authorization (Priv. & Roles) Authentication Account & API Platform

Oliver Schmitz & André Neubauer Lesson learned Being 2nd PO for 10 Teams sucks

Oliver Schmitz & André Neubauer Lesson learned Not for ARC but 4 you

Oliver Schmitz & André Neubauer Lesson learned Never again

Oliver Schmitz & André Neubauer Story What was wrong

Oliver Schmitz & André Neubauer Lesson learned IT/ARC Projects are bad

Oliver Schmitz & André Neubauer Code Quality Speed Fun Time years Project cycle

Oliver Schmitz & André Neubauer Story make it better

Oliver Schmitz & André Neubauer Task What would be agile

Oliver Schmitz & André Neubauer Read some books

Oliver Schmitz & André Neubauer Lesson learned Craftsman- ship

Oliver Schmitz & André Neubauer Lesson learned Scout principle

Oliver Schmitz & André Neubauer Lesson learned sustainability

Oliver Schmitz & André Neubauer Code Quality Speed Fun Time Jahre Sprint

Oliver Schmitz & André Neubauer Task How to reach it?

Oliver Schmitz & André Neubauer Lesson learned Fix what hurts most

Oliver Schmitz & André Neubauer Lesson learned Let people decide

Oliver Schmitz & André Neubauer Sounds simple

Oliver Schmitz & André Neubauer But wait a minute

Oliver Schmitz & André Neubauer Task Somebody Else’s Problem

Oliver Schmitz & André Neubauer Lesson learned responsibility requires power

Oliver Schmitz & André Neubauer Build environment

Oliver Schmitz & André Neubauer Lesson learned Get rid of silos

Oliver Schmitz & André Neubauer Lesson learned With great power comes great responsibility

Oliver Schmitz & André Neubauer Lesson learned Give trust and help

Oliver Schmitz & André Neubauer Task Greenfield more Efficient?

Oliver Schmitz & André Neubauer But…

Oliver Schmitz & André Neubauer Lesson learned We changed our mindset

Oliver Schmitz & André Neubauer Code Quality Speed Fun Time Jahre Sprint

Oliver Schmitz & André Neubauer Lesson learned Enables Innovation

Oliver Schmitz & André Neubauer The End People Happy!

Oliver Schmitz & André Neubauer What’s next Build 2010 Continuous deployment DevOps?

Oliver Schmitz & André Neubauer Thanks

Oliver Schmitz & André Neubauer IT2010 – Increasing Features Availability, Performance Quality Efficiency Increasing Features 0,7 4,0 3,3 2,02,0 3,7 3,3 4,7 4,3 3,3 2,3 4,7 5,3 2,7 4,7 4,34,3 4,0 4,3 5,0 9,0 9,0 6,5 8,5 9,0 9,0 5,0 4,5 7,0 9,0 4,0 9,0 9,0 8,5 7,0 0,0 1,0 2,0 3,0 4,0 5,0 6,0 7,0 8,0 9,0 10,0 25.01.2009 15.02.2009 08.03.2009 29.03.2009 19.04.2009 10.05.2009 31.05.2009 21.06.2009 12.07.2009 02.08.2009 23.08.2009 13.09.2009 04.10.2009 25.10.2009 15.11.2009 06.12.2009 27.12.2009 17.01.2010 07.02.2010 28.02.2010 21.03.2010 11.04.2010 02.05.2010 23.05.2010 13.06.2010 04.07.2010 25.07.2010 15.08.2010 05.09.2010 26.09.2010 17.10.2010 07.11.2010 28.11.2010 19.12.2010 Ist/Woche Soll Ist/Woche Linear (Ist/Woche)

Oliver Schmitz & André Neubauer IT2010 – Improved Quality Availability, Performance Quality Efficiency 0 10 20 30 40 50 60 70 80 90 100 R16 R18 R20 R22/23 R25 R27 R29 R31 R33 R35 R37 R39 R41 R43 R45 R47 R49 R51 R53 R55 R57 T est Prod S um Gesamt Polynomisch (Gesamt) 0 10 20 30 40 50 60 70 80 R46 R47 R48 R49 R50 R51 R52 R53 R54 R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 Test Prod

Oliver Schmitz & André Neubauer Ressources http://agilemanifesto.org/ http://agilemanifesto.org/principles.html http://www.amazon.de/Clean-Code-Handbook-Software-Craftsmanship/dp/0132350882 http://www.amazon.de/Working-Effectively-Legacy-Robert-Martin/dp/0131177052 http://www.amazon.de/Software-Development-Principles-Patterns-Practices/dp/0135974445

Agile Refactoring at ImmobilienScout24

Agile Refactoring at ImmobilienScout24

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