Extreme Practices - AgileTourBeirut - 2016
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Find out how we were able to adopt Extreme Programming (XP) in out distributed team! We are doing remote pair programming and remote meetings on a daily basis. In this presentation, we showed some of the obstacles we faced and how we managed to resolve them!
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Extreme Practices - AgileTourBeirut - 2016
- 3. Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 4. E X T R E M E P R O G R A M M I N G VA L U E S Communication Simplicity Courage Respect Feedback P R I N C I P L E S P R A C T I C E S Mutual Benefits Failure Diversity Quality Opportunity TDD CI 10 Minutes Build Incremental Design Pair Programming Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 5. E N O U G H T I M E T O M A K E Y O U R C O F F E E S TAY I N T H E Z O N E B A B Y S T E P S Questions? Ask us anything: https://pollev.com/ahmadatwi339 1 0 M I N U T E S B U I L D
- 6. Questions? Ask us anything: https://pollev.com/ahmadatwi339 3 M I N U T E S B U I L D
- 7. T E S T D R I V E N D E V E L O P M E N T TDD circle of life Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 8. T E S T D R I V E N D E V E L O P M E N T L E S S B U G S L E S S D E B U G G I N G C L E A N C O D E Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 9. T E S T D R I V E N D E V E L O P M E N T 90% of our code is covered Does it work in all cases? Do we have bugs? Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 10. PA I R P R O G R A M M I N G Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 11. PA I R P R O G R A M M I N G Learn faster / Submit on the first day Code quality increased No impact on productivity Bonded team Tiring Risky Questions? Ask us anything: https://pollev.com/ahmadatwi339 Pairing agreements
- 12. R E T R O S P E C T I V E With agile retrospectives the team drives their own actions! — Ben Lenders Check-In Throw-Back Collect Insights & Discuss Actions ROTI Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 13. Beirut Paris
- 14. R E M O T E PA I R I N G Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 15. T I M E D I F F E R E N C E G E T T I N G L O S T G E T T I N G T I R E D C O D E S H A R I N G Questions? Ask us anything: https://pollev.com/ahmadatwi339 R E M O T E PA I R I N G
- 16. Beirut Paris
- 17. Questions? Ask us anything: https://pollev.com/ahmadatwi339 R E M O T E R E T R O S P E C T I V E S S A DM A D G L A D Message from Beirut
- 18. Questions? Ask us anything: https://pollev.com/ahmadatwi339 R E M O T E R E T R O S P E C T I V E S
- 19. Questions? Ask us anything: https://pollev.com/ahmadatwi339
- 20. Beirut Paris
- 21. http://philippe.bourgau.net/ https://ahmadatwi.me/ @Work_at_Murex @pbourgau @ahmadatwi https://fr.linkedin.com/company/murex Work in Europe or the Silicon Valley while eating Mankoushe every morning!
- 22. THANK YOU TO OUR
- 23. THANK YOU TO OUR PARTNERS
Notas do Editor
- I will start this presentation with a simple question! Who here goes to work by car? Who takes the bus? Who takes Skype? I take Skype every day to Paris Today, Philippe & I will show how we adopted Extreme Programming in our distributed team. During this presentation we will have 2 live demos, the first one on pair programming and the other one simulating how we run remote meetings on a daily basis. The presentation is expected to last for 50 minutes with the last 10 minutes dedicated for answering your questions. You are a software engineer working or willing to work for an international company? Then you might be interested in our session; as we will be sharing a real life examples of adopting XP in a remote setting. We will cover some of the obstacle we faced and how we managed to solve them. On top of that, we will have 2 live demos one on remote pair programming and another on remote retrospectives!
- Philippe: Happiness and Productivity Hacker Officially : Software Engineer Currently : developer, architect, manager & agile coach in my risk engine team at Murex; self proclaimed change agent in the company; serial side project builder at night; devoted family guy. Hi, I’m the remote buddy in this talk Ahmad: Is senior software engineer in the team at Murex Beirut. Before joining the team, he spent some time working on server infrastructure at Murex He is an active member of the development community, both inside and outside of Murex : Coding Dojo organizer, trainer, speaker and side project night howl Outside of programming Ahmad is also a long time squash player Murex: At the age of 30 Murex is the leader in the financial software market with offices all around the world (18 offices and counting). The Product: Our team is building a capital market risk engine, we are part of the R&D department so in some cases we dedicate some time to explore new technologies
- In this presentation we will be focusing on the XP Practices. That is why we named our presentation Extreme Practice Philippe, do you want to add something ? - Yes, I’d also add that it’s stress free ! Try it and you’ll never want to go back …
- 10 minutes is the recommended time for the build compilation (this time enough to have a short coffee break without actually wasting time) Stay in the zone: Don’t lose focus Short feedback loop Code in baby steps: Submit more frequently Easier to analyze when a bug is reported
- TDD is a another practice of TDD which stands for Test Driven Development 3 Development states: as the name suggest, with TDD the development is driven by tests not the opposite way around. It is based on 3 states: First we start by writing a failing test for the feature we want to implement Then we write the minimum code to make that test (and only the test) pass When the code gets a bit mature we continuously refactor code to keep it clean and follow the best practices
- Why?: Some developers might argue on the benefits of TDD, based on our experience we have noticed that TDD will result in: Less bugs: Small code written -> less bugs Less debugging: A well written test shouldn't require debugging Debug a simple test instead of production scenario Clean code with better design: Design broken down per feature and test Triggers code refactoring when finding difficulty writing a test Any comments? Yes, I hate the debugger anyway …
- Here is a result of the TDD Does it work in all cases? Any kind of applications (small, huge, complex) Hard with mathematical / algorithmic equations Do we have bugs? Yes. Exploratory-testing Client Write a test for each bug Our reported bugs has decreased
- The third practice we will discuss in this presentation is “Pair Programming”. Obviously it stands for having 2 developers writing code together Two developers coding together Driver: writing code Navigator: continuously reviewing the code Four Eyes Principle
- Benefits: We have noticed that: Learn Faster: Share knowledge Code Quality: Continuous code review Productivity: Sharing the same knowledge across the team Minimum impact when someone leaves Less code duplication Downside: Tiring: Driver explaining every step Navigator focused on what Driver is doing Risky: Not all developers like to pair Agreements: Respect each other Listen to each other’s ideas and suggestions Change pair every week Remote-Pair if you’re sick Comments: Yes, you forgot an important pairing agreement : « Don’t forget the wash before coming to work … »
- What is it? A team meeting held at the beginning of each iteration to review and evaluate the previous sprint The main purpose of this meeting is to come up with tasks to improve the team’s process Meeting Structure: We usually divide the meeting to multiple activities: Check-In: Energizer to involve everyone Throw Back: Collect Data & Discussion: Each throws his points (Good/Pain) Group points Vote Actions: Group discussion to come with actions for the Pain points or issues Vote on actions Move to back log ROTI: Return over time invested A quick review on how the session went You will be part of it at the end
- Almost 3 years ago I joined the team from the Beirut office. We didn’t want to change our way of work because we had already seen the benefits of it. So we decided to give the remote work a try. There were two major activities to be adjusted Pair Programming -> Remote Pair Programming Meeting -> Remote Meetings
- Collaboration tools to the rescue: We installed headsets and cameras for all the team members So we switch from from physical to virtual pairing: We share the screens via Skype And we moved to a continuous video conference status
- Sharing screens was not the major problem if we have a good connection Discussed the difficulties at the retrospectives and came up with solutions Some of the problems were: Time: Office Hours, Lunch, Breaks etc. Solution: Share calendar Share online document At any point anyone is aware of the story’s status Getting Lost: Risk of losing the driver Temptation to keep the keyboard Solution: Submit in small batches Shelve code when not possible Pomodoro technique Code Sharing: Can’t point your finger on the screen Solution: try Floobits and Saros Getting Tired: Headaches from the headset Loudspeakers wont work in open space Solution: Ask for a short break when Any Comments - yes, a great thing about remote pairing is that you can come in flip flops in you wish, your pair won’t notice !
- It is demo Time Philippe & I will now do a live demo of how do we actually pair program. So we will try to write code to solve the FizzBuzz problem
- 2 major difficulties White Board: White board in Paris: Send our notes as Lync messages Philippe would post them on white board Thomas would take pics Trello: became our online white board Scrum master is not restricted to Paris office
- No Video Conference Story: Leave meeting any time Phone calls over speakers No visualization of the other office Solution: Visio conference rooms in Paris and Beirut Dedicated screen for sharing and video Do you remember Philippe? Philipppppe? you are still there? - Yes, sorry, I was away for a minute … just wanted to see if you noticed ….
- - After such a setup remote meeting weren’t restricted to retrospectives only! but we actually have remote lunch meetings from time to time!
- It is demo Time Philippe & I will now do a live demo on how we run a remote retrospective meeting.