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On Scaling React Applications Stepan Parunashvili 1
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@stopachka www.stepanp.com 2
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3 Scaling React Applications?
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4 Scaling React Applications?
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Scaling Your Team 5
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6 # engineers output
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7 # engineers output
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8 # engineers output
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9 # engineers output
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Scaling Your Product 10
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11 LOC # features
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12 LOC # features rewrite
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13 LOC # features
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Goal: Scale Frontend 14
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Why React? 15
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...2015 17
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...2014 18
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...2013 19
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...2012 20
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...2011 21
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2010 22
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24 v0.1.0
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increment append, decrement, replace 31
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Now... 32
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Problem: Keep the DOM in Sync 38
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2011... 43
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2012... 44
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2013 45
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declarative 49
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composable 51
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cohesive 53
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declarative composable cohesive 55
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What's next? 56
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How do we do this? 60
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Container Components 61
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62 props @huang47
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63 FooContainer
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64 FooContainer Foo
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65 FooContainer Foo handle data ui logic
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Why? 67
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68 Container Components • manage data
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69 Container Components • manage data • ui logic
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70 Container Components • manage data • ui logic • reusable
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71 Container Components • manage data • ui logic • reusable • tests needed
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72 UI Components • manage data • ui logic • reusable • tests needed
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timeout/retry 81
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timeout/retry batch 82
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timeout/retry batch filter params 83
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Expose UI Components 92
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95 UI Component
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96 container container
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* Works best with Redux 97
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100 Containers to Manage Data Expose UI Components Keep a single app state
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What's next? 101
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103 Step: Action Fired
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104 Step: Diff Virtual DOM
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105 Step: Apply changeset
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106 Step: Diff Virtual DOM
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107 Step: Diff Virtual DOM :0
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1 year later... 113
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1 year later... 114
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ImmutableJS 116
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Structural Sharing 122
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Robust by Default 125
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Records 131
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What's next? 136
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HOC 137
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Implicit Contracts 139
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Implicit Contracts State Clashes 140
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Implicit Contracts State Clashes Performance Issues 141
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Push difficulties towards the core 144
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On JS Fatigue 145
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Stick to Principles 146
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Could this be a paradigm shift? 147
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Could this level the playing field? 148
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Could this reduce iteration time? 149
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For now, 150
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Use Container Components Use Immutable Data Use FP 151
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Bonus: relay, redux-saga css-modules 152
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Thank you :) 153