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Agile Architecture

Agile Architecture. Colombo Agile Meetup Johannes Brodwall, Chief scientist Exilesoft Global. What is an architect? From greek Arkhi-Tecton Arkhi : Chief. Like “Arch angel” Or “Arch nemesis” Tecton : Builder. What is an architect? (Exilesoft definition).

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Agile Architecture

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  1. Agile Architecture Colombo Agile Meetup Johannes Brodwall, Chief scientist Exilesoft Global

  2. What is an architect? From greekArkhi-Tecton Arkhi: Chief. Like “Arch angel” Or “Arch nemesis” Tecton: Builder

  3. What is an architect? (Exilesoft definition)

  4. A solution architect is someone who understands the problem of the customer and uncoversand communicates a feasible solution

  5. A solution architect is someone who understands the customer’s problem (including contraints, context, domain knowledge) and uncovers (though a team effort) and communicates (with credibility) a feasible solution (primarily, but not exclusively technical)

  6. Uncover problemvision, stakeholders, usage flow Describe problemcontext and domain model Describe solutiondeployment, implementation model Simplify architecturefeature oriented structure Deliver softwarerainbow plans

  7. Describing architecture Simplifying architecture Delivering architecture Delivering software • Delivering architecture

  8. Part I:

  9. Describing architecture

  10. Understanding the problem

  11. (Tool time)

  12. For some stakeholder Who has a goal The Colombo Agile Meetup Is a type of activity Which gives a capability. Unlike most relevant alternative This has a distinguishing attribute.

  13. For anyone interested in agile methods Who ________________ The Colombo Agile Meetup Is a _________________ Which ________________. Unlike ______________________ This _______________________.

  14. Example «Smidig» conference application

  15. Example vision statement

  16. For Agile practitioners Who need to expand on their experience and network TheSmidig conference Is a networking event Which connects you with other Agile practitioners. Unlike traditional conferences Thispresents the experience of many people through lightning talks.

  17. For Conference organizers Who want to organize a good conference TheSmidig conference app Is a web application Which eliminates unnecessary work. Unlike commercial conference apps Thisis optimized for the large number of talks we have and allows us to make changes fast.

  18. Example stakeholders

  19. Organizer Attendee Description Volunteer Works in evenings Has network Description Experienced New speaker Passionate Description Knows about agile Works in project Norwegian Speaker Duties Select talks Follow up payments Duties Register talk Upload slide Give talk Duties Pay for conference Get approval to go Values Easy selection process Good information overview Never lose a participant Financial transparency Values Constructive feedback on talk Easy CfP Fast answer Values Easy registration

  20. Sponsor Description Busy Manager Not very interested Duties Provide logo Pay sponsorship Values Informal communication Easy evaluation

  21. Example usage flow

  22. Attendance • Agile project practitioner wants to learn • Attendee goes to Smidig website • Attendee registers • Attendee pays • Attendee receives confirmation mail • Organizer can see the registration • Organizer sends reminder email to attendee to come • Organizer prints badges for attendees • Attendee shows up at Smidig and has an excellent time

  23. Speaker • Agile experts wants to share knowledge • Potential speaker goes to Smidig website • Potential speaker registers personal info • Potential speaker registers talk • Potential speaker receives registration confirmation email • Organizer sees registered talk and can market speaking opportunities • Organizer accepts talk for confence • Speaker receives acceptance email • Alternative: Speaker withdraws talk – organizer updates the talk and selects another • Organizer prints badges for speakers • Speaker shows up at Smidig and gives talk

  24. /Understanding the problem

  25. Uncovering a solution

  26. Example context model

  27. Paypal Smidig2011.no Printing company Participant Speaker Organizer

  28. Example domain model

  29. User • Name • Email • Company • Phone • Password • Accepts email? • Registration • Ticket type • Price • Paid amount • Paypal ref • Payment date • Invoice address [optional] * * • Comment • Title • Text • Created date Speaker * * • Talk • Title • Description • Tags[] • Slide file • Status : {pending, accept, reject} • Email_sent • Position • Period • Stage • Title • Time of day • Day

  30. Example implementation diagram

  31. Paypal.com Browser Smidig2012.no 1. POST /users Save user info 2. Redirect to paypal with return_url and notify_url 3. Perform payment 4. POST /payment_notifications Update user info 5. Redirect to return_url 5. GET /user/<id> Show user info

  32. Example deployment model

  33. html/http Heroku git push git pull git push Smidig-conference (Rails) Paypal http github git.heroku smtp Web user Developer Smtp.dreamhost.com PostgreSQL smidigdb

  34. /Uncovering a solution

  35. Communicating a solution

  36. Vision Stakeholders Usage flow Context Domain model Implementation Deployment

  37. Does the architect have to do this herself?

  38. Team effort

  39. /Communicating a solution

  40. /Describing architecture

  41. Part II:

  42. Simplifying architecture

  43. Lasagna architecture

  44. Person-Controller Person-Service Person-Repository PersonDao Person-Controller-Impl Person-ServiceImpl Person-Repository Impl PersonDao Impl Session-Factory

  45. Controllers Services Managers Workers Repositories

  46. Controllers DTO Services Mapping Domain Managers Workers Repositories

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