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Marco Cecconi! 10.10.2014! GUERRILLA PROGRAMMING! Marco Cecconi! Skalierung!

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About  me •  So#ware  Engineer  who  loves/codes  Stack  Overflow   •  Some9mes  speak  at  conferences  about  things   •  @sklivvz  on  TwiAer   •  hAp://sklivvz.com  

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Guerrilla  programming •  This  talk  is  about  a  pa$ern.     •  It  is  not  about  design  paAerns.     •  It’s  about  how  our  industry  (“so#ware  engineering”)  moves   •  Problems  go  through  three  stages:   •  Discovery   •  Experimenta9on   •  Synthesis   •  For  example,  speaking  of  the  Hollywood  image  of  hackers...  

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Warning   •  The  following  material  is  probably  not  right  for  your  case.     •  It’s  right  for  some  people,  in  some  specific  situa9ons  and  at  some   specific  9mes.    

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•  Object  oriented  analysis   •  Find  the  objects   •  Organize  the  objects   •  Describe  how  the  objects  interact   •  Define  the  behavior  of  the  objects   •  Rela9onal  data  analysis   •  Find  the  en99tes   •  Normaliza9on  &  schema   •  Queries   •  Indexes   •  Constraints  

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hAp://rubyquick9ps.com/post/292826666/display-­‐ac9verecord-­‐generated-­‐sql-­‐queries-­‐in-­‐the  

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hAp://www.tutorialspoint.com/hibernate/hibernate_examples.htm  

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hAp://www.tritac.com/bp-­‐24-­‐dapper-­‐net-­‐by-­‐example  

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OOP  is  about  taming  complexity  through  modeling,  but  we  have  not   mastered  this  yet,  possibly  because  we  have  difficulty  dis9nguishing   real  and  accidental  complexity.   I  believe  that  to  make  further  progress  we  must  focus  on  change  and   how  OOP  can  facilitate  change.  A#er  all  these  years,  we  are  s9ll  in  the   early  days  of  OOP  and  understanding  what  it  has  to  offer  us.     Oscar  Nierstrasz   [Banquet  speech  given  at  ECOOP  2010.  Maribor,  June  24,  2010]     hAp://blog.jot.fm/2010/08/26/ten-­‐things-­‐i-­‐hate-­‐about-­‐object-­‐oriented-­‐programming/comment-­‐page-­‐2/  

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hAp://blog.8thlight.com/uncle-­‐bob/2014/05/12/TheOpenClosedPrinciple.html  

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Beyond  SOLID •  “Create  APIs”   •  Library  based  architectures   •  UNIX   •  Perl   •  Ruby   •  node.js   •  Nuget   ...   •  Stack  Overflow  

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“Amazon is on record as making changes to production every 11.6 seconds on average in May of 2011. Facebook releases to production twice a day. Many Google services see releases multiple times a week, and almost everything in Google is developed on mainline.” Jez Humble - The Case for Continuous Delivery hAp://www.thoughtworks.com/insights/blog/case-­‐con9nuous-­‐delivery  

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“SQL  databases  are  fundamentally  non-­‐scalable,  and  there  is   no  magical  pixie  dust  that  we,  or  anyone,  can  sprinkle  on   them  to  suddenly  make  them  scale.”         Adam  Wiggins  -­‐  SQL  Databases  Don't  Scale   hAp://adam.herokuapp.com/past/2009/7/6/sql_databases_dont_scale/  

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hAp://teamganA.com/blog/2014/03/13/how-­‐to-­‐use-­‐ganA-­‐charts-­‐for-­‐your-­‐agile-­‐project/  

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Agile  Manifesto • Individuals  and  interac9ons  over  processes  and  tools   • Working  so#ware  over  comprehensive  documenta9on   • Customer  collabora9on  over  contract  nego9a9on   • Responding  to  change  over  following  a  plan  

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What  is  guerrilla  programming? 1.  Be  skep9cal   2.  Be  insighnul   3.  Be  bold  

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The  End   Thanks  for  listening!   Marco  Cecconi   @sklivvz