This Old App

What could renovating an old house have in common with upgrading an old app? Everything! Let me show you how this old house renovation project proceeds, from planning to scheduling, demolition to finishing, and how every stage directly relates the lessons learned from app upgrades over the course of my career.

Transcript

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2. This old app
   Lori Olson
   @wndxlori
   RubyConf Houston 2022
   

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3. Lori Olson
   @WNDXLORI
   Lethbridge, AB !
   spouse of Trever
   scooter & K.C.’s mom
   

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4. Lori Olson
   lori@WNDX.com
   developer, mentor, trainer
   founder of WNDX School
   Creator of 6 Pack Apps
   

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5. warning
   some non-Ruby projects wi be
   mentioned
   

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6. This old House
   

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7. This old app
   

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8. old houses and old apps
   what do they have in common?
   

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9. Turns out, quite a bit
   especially when you are talking about
   upgrading/renovating
   

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11. • Planning
    • Scheduling
    • Demolition
    • Construction
    • Finishing
    Stages of
    App upgrade?
    house upgrade?
    

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12. challenges
    

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13. Ceiling
    

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14. skylights
    

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16. Stick built
    

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17. wasps
    

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18. wasps
    

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19. four nests
    

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20. gaspac
    

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21. random crashes
    

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22. memory stomp
    

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23. bug hunt
    

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24. Borland C++ OWL
    

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25. Off by 1 error
    

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26. DEBUGGING
    ASSEMBLY CODE
    

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27. why random?
    

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28. 4 byte allocations
    

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29. flooring
    

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30. refinish vs replace
    

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31. 4 different
    contractors
    

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32. why?
    

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33. really freaking
    difficult
    

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34. really freaking
    difficult
    

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35. replace
    

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36. nglnow
    

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37. upgrade failures
    

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38. weblogic 5.1 -> 8
    

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39. licensing
    

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40. xml hell
    

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41. deprecation happy
    

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42. happy
    

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43. fireplace
    

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44. beautiful
    

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45. over engineered &
    bulky
    

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46. conversation pit,
    unusable
    

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47. conversation pit,
    done right
    

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48. racoons
    

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49. i can see daylight
    

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50. almost done
    

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51. perfectly clear
    

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52. Photo correction
    library
    

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53. photoshop plugin
    

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54. for mac
    

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55. carbon vs cocoa
    

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56. 8 vs 16 bit bugs
    

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57. Adobe Photoshop SDK: 16 bit
    27-Sep-09 10:55:08 AM
    3.3 Plug-ins and 16 bit data
    3.3.1 Why does my 16 bit plug-in only see values of 0 - 32768 and not 0 - 65535?
    Photoshop uses an internal representation of 16 bit data of 0 - 32768. When acquiring,
    importing, reading, or writing files check or set the maxValue in the parameter record.
    Filters will also see this range for 16 bit data.
    What is Evernote? Create an Evernote account
    

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59. books/bookcases
    

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60. so many books
    Lots and lots
    

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61. so many books
    

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62. so many books
    

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63. so many books
    

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64. order/structure
    

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65. 55 boxes
    

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66. garage storage
    

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67. First half
    

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68. Second half
    

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70. etriever/welltriever
    

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72. someone else’s data
    

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73. ppdm
    

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74. sql join
    hell
    

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75. welltriever
    different
    

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76. redis
    

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77. async jobs
    

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79. walls
    

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80. paint over or
    replace?
    

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81. discontinuities
    

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82. RIP IT OUT
    

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83. and REPLACE
    

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84. wimby
    

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86. Required
    updates
    

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87. Removed
    from Store
    

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88. unsupported gems
    

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89. please no
    

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90. asbestos
    

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91. asbestos
    

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92. aluminum wiring
    

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93. Dodged that one
    

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94. old rails apps
    

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95. etriever
    

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96. rails 0.13
    

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97. roll your own
    authentication
    

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98. roll your own
    authorization
    

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99. roll your own
    job queues
    

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100. passwords
     

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101. passwords
     saved in the clear
     

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102. passwords
     saved with reversible
     encryption
     

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103. passwords
     logged as entered in
     log files
     "
     

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104. Finishing
     

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105. Nothing goes according to plan
     

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107. As long as your app is in production
     

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109. Interested in
     Mobile App development?
     Game Development?
     IN RUBY?!?!
     https://wndx.school
     

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