Continuous Integration, fast builds and Flot

Prepared for the Melbourne Patters Group

Transcript

1. Con$nuous  Integra$on,  Fast   Builds  and  Flot   Chris  Bushell  -­‐  Melbourne  Pa9erns  Group   February  3rd  2010  
2. Tradi$onal  SoCware  Development   •  Waterfall   •  Development  happens  independently,  in   parallel  streams   •  Integra$on  phase  
3. Integra$on  Is  Painful   •  Time  consuming   •  Unpredictable    
4. Typical  SoCware  Development  
5. Con$nuous  Integra$on   •  Single  source  code  repository   •  Automated  build   •  Automated  tests   •  Frequent  commits  
6. CI  In  Prac$ce  –  Check  Out   Time  
7. CI  In  Prac$ce  –  Write  Code   Time  
8. CI  In  Prac$ce  –  Run  Build   Time  
9. CI  In  Prac$ce  –  Commit   Time  
10. CI  In  Prac$ce   Time  
11. CI  In  Prac$ce  –  Con$nuous  Build   Time  
12. Encourage  Frequent  Check-­‐Ins   •  Integra$ng  small  changes  is  much  less  painful   and  $me  consuming  than  integra$ng  large   changes  
13. Problem  -­‐  Builds  Can  Become  Slow   •  More  code  =  more  tests  =  longer  build  $me  
14. A  Fast  Build  Is  Essen$al   •  Idle  developers   •  Context  switching   •  Unable  to  deliver  new  features   •  I  get  bored  easily  
15. Monitoring  Build  Time   •  Need  to  measure  how  long  your  build  takes  
16. Con$nuous  Integra$on  Server   •  API  allows  us  to  access  historic  build  $me   informa$on  
17. Flot   •  Demo  
18. Speeding  Up  A  Slow  Build   •  Split  code  base  
19. Speeding  Up  A  Slow  Build   •  Hardware   •  SSD  
20. Speeding  Up  A  Slow  Build   •  Think  about  how  to  test   •  Unit  tests  are  fast   •  Func$onal  tes$ng  can  be  slow  
21. Speeding  Up  A  Slow  Build   •  Isola$on  from  slow  dependencies   •  Impersonator  pa9ern  
22. Speeding  Up  A  Slow  Build   •  Parallelize  build   – Be  careful  with  shared  dependencies  
23. Speeding  Up  A  Slow  Build   •  Choose  a  light  weight  development  container  
24. Speeding  Up  A  Slow  Build   •  Sam  Newman’s  Build  Pa9erns   – Check  In  Gate   – Fish  Eye  Test  Suite   – Build  Time  Limit