Building Mobile (app) Masterpiece with Distributed Agile
Upcoming SlideShare
Loading in...5
×
 

Building Mobile (app) Masterpiece with Distributed Agile

on

  • 228 views

Presented at Geeky Base on Oct 22nd, 2013

Presented at Geeky Base on Oct 22nd, 2013

Statistics

Views

Total Views
228
Views on SlideShare
226
Embed Views
2

Actions

Likes
0
Downloads
1
Comments
0

1 Embed 2

http://www.linkedin.com 2

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Building Mobile (app) Masterpiece with Distributed Agile Building Mobile (app) Masterpiece with Distributed Agile Presentation Transcript

  • Building  Mobile  Masterpiece     with  Distributed  Agile   Weerasak  (Wee)  Witthawaskul   October  22,  2013  
  • First,  thanks  to…   !   @weera  for  making  the  meetup  possible   !   Agile66  Facebook  page   !   Geeky  Base  for  location  and  facility   !   And  all  of  you,  curious  smart  minds  
  • Who  am  I?  
  • Who  am  I?  
  • Why  should  you  listen  to  me?   !   You  already  know  agile  and  want  to  know   how  I  adopted  distributed  agile   !   You  want  to  know  why  mobile  development   has  more  challenges  than  web  development   !   How  you  can  apply  agility  to  your  projects  
  • Case  Study  
  • Morningstar  for  iPad   !   Portfolio  management  and   financial  research  app   !   Shipped  in  September  2013   !   Top  10  in  Finance  free  app  in   US  store  as  of  October  2013  
  • Demo  time  
  • Project  History   !   Initiated  in  2011  as  an  incubator  project  to  experiment  and   complement  morningstar.com's  user  experience  using   tablets   !   The  company  already  had  smartphone  apps  on  iPhone,   Android,  Blackberry  from  a  China  team   !   I  joined  the  company  in  April  2011  as  the  first  Chicago   developer   !   Zero  professional  experience  with  mobile,  how  to  start?  
  • Initial  Observations   •  Management  buy-­‐in  to  use  Agile  methods   •  Young,  energetic  team   •  Lack  of  process  &  automation   •  UI  Design  work  was  not  in  the  same  sprints   •  Ambitious  cross  platform  architecture   •  Lack  of  OO  Design  &  Clean  Code  discipline  
  • Action  Items   •  Communication,  communication,  communication   •  Architectural  and  Process  Analysis   •  Continuous  Integration  Setup   •  Product,  Design  and  Development  Sprint  Alignment   •  Agile  Practice  Training  &  TDD    
  • Tools   •  JIRAs  for  distributed  team  whiteboards   •  Jenkins  for  automated  build  &  deployment   •  TestFlight  for  iOS  app  internal  distribution  
  • Build  Pipeline  –  iOS  Client   Unit  Test   Build   Main   Build   Client  code  checkins   UI   Automati on  Build   Automated  User   Acceptance  Tests   TestFlight  
  • Build  Pipeline  –  Server   Unit  Test   Build   Server  code  checkins     Manual  deploy   Sanity  Test Builds  with   Main  Build   SoapUI   Auto  deploy   Internal   Dev  Server   Stable  Dev   Server  
  • Continuous  Integration   •  Morningstar  app  for  iPad   –  7,300+  (client)  and  2,600+  (server)  commits   –  4,000+  automated  iPad  builds  &  deployments   –  1,000+  automated  server  builds  &  deployments   –  Code  checkins  à  Test  builds  à  Deploy  builds   10/22/13 Mobile Solutions Development Team 15
  • Past  Internal  Environments   Build  &  Auto     Deploy   Build  &  Auto     Deploy   Build  &  Auto     Deploy   Dev  Server   Manual  1-­‐click  Deploy   Stable  Dev     Server   OK   iOS  Devices   10/22/13   OK   OK   Mobile  Solutions   Development  Team   16  
  • Current  Environments   Build  &  Auto     Deploy   Build  &  Auto     Deploy   Build  &  Auto     Deploy   Dev  Server   Stable  Dev     Server   QA  Server   Staging     Server   Live   Server   iOS  Devices   Manual  1-­‐click  Deploy  with  approval  
  • Test  Driven  Development   •  Client   –  400+  Classes,  72,000+  LOC,  160+  XIBs   –  600+  Unit  Tests   –  GHUnit  for  testing,  OCMock  for  mocking   –  User  Acceptance  Testing   •  Behavior  Driven  Test  with  Frank  (retired)   •  Apple  UIAutomation  (under  development)   10/22/13 Mobile Solutions Development Team 18
  • Test  Driven  Development   •  Server   –  230+  classes,  20K+  LOC   –  180+  test  classes,  20K+  LOC   –  86%  line  coverage   –  65%  conditionals  coverage   –  JUnit  for  testing   –  JMockIt  for  mocking   10/22/13 Mobile Solutions Development Team 19
  • Full  Stack  Mobile  Development   •  Concurrent  client  (iPad)  and  server  (Java)   development   •  Multi-­‐version  support   •  Client  or  server  logic   •  Skillsets  
  • Evolving  Architectures   Request/ Response   Client-­‐side   Publish/ Subscribe   Async  Server-­‐ side  Publish/ Subscribe   Past   Present   Future  
  • Gateway  Architecture   Apple  iTunes     In  App  Purchase   Login   Morningstar   iPad  app   REST/JSON  over  HTTPS   Morningstar Mobile   Server   Portfolio   API   Others   UIWebView  over  HTTPS   HTML  pages  
  • Reusable  Components   Popover  with   bottom  fade   effect   Securities  labels   with  ratings   Security  Charts  
  • Publish/Subscribe  Architecture   Based  on  Event  subscription/notification  from  NSNotificationCenter   User  taps  to  see  mini-­‐quote   Each  row  subscribes  to  its  security  object   When  the  app  receives  updates  to  a  security   object,  all  subscribers  get  latest  data  and   update  views  
  • Internal  Features   •  Feature  Toggles   •  Internal  Server  Connection   •  “Shake”  Feedback   •  Logging  &  Performance  Monitoring  
  • Feature  Toggles   •  Allow  us  to  experiment  with  new  features   •  Can  be  used  to  enable/disable  features  based  on   context   Mobile Solutions Development 10/22/13 Team
  • RESTful  APIs   •  Since  we  cannot  control  published  app   customer  upgrades*,  we  have  to  make  sure   the  server  supports  multiple  client  app   versions,  different  locales,  multiple  products.   –  REST  with  JSON  over  HTTPS   –  Cacheability,  CDN  friendly  (Akamai/Varnish)  
  • RESTful  API  Examples   •  HTTPS  GET/PUT/POST/DELETE/OPTIONS   •  Endpoint  convention   –  Format:  https://{dns}/{ServicePrefix}/{resources}   –  ServicePrefix   •  /service/1.0/locales/en-­‐US/products/RT/   –  REST  resources   •  /securities/USA:MORN/news   •  /securities/USA:MORN/quotes   •  /securities/USA:MORN/info   •  Example     –  GET  https://mobileservice.morningstar.com/service/1.0/locales/en-­‐US/products/ RT/securities/USA:MORN/news  
  • Standard  Data  Formats   •  “Glue”  between  client/server   •  Standard  formats  for  Security,   Holding,  Portfolio,  News  etc.   •  Reusable  parsers   •  JSON  data  types   •  DateTime  in  UTC  (ISO8601)   •  Regardless  of  data  formats  from   different  data  sources,  mobile   server  and  app  share  one   common  format  
  • Async  I/O     Promise<HttpResponse>,  WS.getAsync  and  Promise.waitAll   Server   Chained  of     HTTP     response     Promises     waitAll     Thread    yield     transform  &   serialize   results   Security  Data   Portfolio  API   Async  calls   CMS  
  • Launch  Results   •  Public  launched  on  Sep  16,  2013   •  5,000  app  downloads  in  1  week   •  1M  web  service  calls  in  1  week;  4M  calls  in  3   weeks   •  Average  web  service  response  time  is  ~712ms  
  • Rome  was  not  built  in  a  day   •  Agile  is  more  a  guideline.  Mix  &  match  for  your  team   •  Focus  on  working  software   •  Iterate,  iterate  and  iterate   •  Internal  feedback  is  good;  external  feedback  is  great   •  Deadline  vs  Feature  dilemma   •  Continual  improvements  and  releases  are  key  to   improve  user  engagement  &  satisfaction  
  • First  release  is  just  the  beginning   Creating  masterpiece  is  the  end  goal   Thanks  &  Questions?   @_wee_