Slide 1

Slide 1 text

Thursday, June 14, 12

Slide 2

Slide 2 text

Thursday, June 14, 12

Slide 3

Slide 3 text

Guillermo Rauch Thursday, June 14, 12

Slide 4

Slide 4 text

@rauchg Thursday, June 14, 12

Slide 5

Slide 5 text

devthought.com Thursday, June 14, 12

Slide 6

Slide 6 text

learnboost.com Thursday, June 14, 12

Slide 7

Slide 7 text

started career in open-source Thursday, June 14, 12

Slide 8

Slide 8 text

creator of socket.io realtime framework Thursday, June 14, 12

Slide 9

Slide 9 text

MongoDB monk and mongoose ORM Thursday, June 14, 12

Slide 10

Slide 10 text

distribute, up, browserbuild, juice & others Thursday, June 14, 12

Slide 11

Slide 11 text

Author of Smashing Node Thursday, June 14, 12

Slide 12

Slide 12 text

buy it Thursday, June 14, 12

Slide 13

Slide 13 text

HTML5 WebSockets Thursday, June 14, 12

Slide 14

Slide 14 text

socket.io Thursday, June 14, 12

Slide 15

Slide 15 text

socket.io 1.0 Thursday, June 14, 12

Slide 16

Slide 16 text

wow Thursday, June 14, 12

Slide 17

Slide 17 text

websockets Thursday, June 14, 12

Slide 18

Slide 18 text

RFC 6455 = The WebSocket Protocol Thursday, June 14, 12

Slide 19

Slide 19 text

new WebSocket Thursday, June 14, 12

Slide 20

Slide 20 text

but not just messages Thursday, June 14, 12

Slide 21

Slide 21 text

also streams of data Thursday, June 14, 12

Slide 22

Slide 22 text

problema numero #1 Thursday, June 14, 12

Slide 23

Slide 23 text

different protocols in each browser Thursday, June 14, 12

Slide 24

Slide 24 text

Chrome Thursday, June 14, 12

Slide 25

Slide 25 text

good guy IE10 Thursday, June 14, 12

Slide 26

Slide 26 text

iOS 4.2, Safari, Opera = older, more insecure protocol Thursday, June 14, 12

Slide 27

Slide 27 text

Firefox uses MozWebSocket Thursday, June 14, 12

Slide 28

Slide 28 text

websocket.io to the rescue Thursday, June 14, 12

Slide 29

Slide 29 text

wow Thursday, June 14, 12

Slide 30

Slide 30 text

meanwhile, in the real world Thursday, June 14, 12

Slide 31

Slide 31 text

we need cross-browser, cross-platform support Thursday, June 14, 12

Slide 32

Slide 32 text

socket.io to the rescue Thursday, June 14, 12

Slide 33

Slide 33 text

a little history Thursday, June 14, 12

Slide 34

Slide 34 text

In 2007, AppJet starts a Rhino-based SSJS app cloud Thursday, June 14, 12

Slide 35

Slide 35 text

The most important predecessor to Node.JS Thursday, June 14, 12

Slide 36

Slide 36 text

With AppJet, an application called etherpad is written Thursday, June 14, 12

Slide 37

Slide 37 text

Thursday, June 14, 12

Slide 38

Slide 38 text

Thursday, June 14, 12

Slide 39

Slide 39 text

Thursday, June 14, 12

Slide 40

Slide 40 text

Thursday, June 14, 12

Slide 41

Slide 41 text

etherpad does two things differently Thursday, June 14, 12

Slide 42

Slide 42 text

1. It’s a realtime web application based on long-polling Thursday, June 14, 12

Slide 43

Slide 43 text

Unlike every other implementation since NES… Thursday, June 14, 12

Slide 44

Slide 44 text

JS is no longer a PHP-style response handler Thursday, June 14, 12

Slide 45

Slide 45 text

2. etherpad truly benefits from a single language Thursday, June 14, 12

Slide 46

Slide 46 text

Let’s go on a tangent Thursday, June 14, 12

Slide 47

Slide 47 text

Realtime collaboration is all about state syncing Thursday, June 14, 12

Slide 48

Slide 48 text

The algorithm that merges changes is called OT Thursday, June 14, 12

Slide 49

Slide 49 text

Thursday, June 14, 12

Slide 50

Slide 50 text

Thursday, June 14, 12

Slide 51

Slide 51 text

Thursday, June 14, 12

Slide 52

Slide 52 text

My name is John Thursday, June 14, 12

Slide 53

Slide 53 text

My name is John My name is John User A User B Thursday, June 14, 12

Slide 54

Slide 54 text

My name is John My name is John User A User B #1 #1 Thursday, June 14, 12

Slide 55

Slide 55 text

My name is John My name is John User A User B #1 #1 concurrently Thursday, June 14, 12

Slide 56

Slide 56 text

My name is John My name is John User A User B #1 #1 concurrently My name is John Hello Thursday, June 14, 12

Slide 57

Slide 57 text

My name is John My name is John User A User B #1 #1 concurrently My name is John Hello My name is John Doe Thursday, June 14, 12

Slide 58

Slide 58 text

My name is John My name is John User A User B #1 #1 concurrently My name is John Hello My name is John Doe 1. Go to position 0 and remove 10 characters Thursday, June 14, 12

Slide 59

Slide 59 text

My name is John My name is John User A User B #1 #1 concurrently My name is John Hello My name is John Doe 1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 Thursday, June 14, 12

Slide 60

Slide 60 text

My name is John My name is John User A User B #1 #1 concurrently My name is John Doe { “rev”: 1, “ops“: [ { “type“: “delete”, “pos”: 0, “length”: 10 } , { “type“: “add”, “pos”: 0, “text”: “Hello” } ]} Thursday, June 14, 12

Slide 61

Slide 61 text

My name is John My name is John User A User B #1 #1 concurrently { “rev”: 1, “ops“: [ { “type“: “delete”, “pos”: 0, “length”: 10 } , { “type“: “add”, “pos”: 0, “text”: “Hello” } ]} { “rev”: 1, “ops“: [ { “type“: “add”, “text”: “ Doe”, “pos”: 15 } ]} Thursday, June 14, 12

Slide 62

Slide 62 text

#3 John Hello Doe Thursday, June 14, 12

Slide 63

Slide 63 text

1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 3. Add “ Doe” at position 15 Thursday, June 14, 12

Slide 64

Slide 64 text

1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 1. Add “ Doe” at position 15 || Thursday, June 14, 12

Slide 65

Slide 65 text

1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 3. Add “ Doe” at position 10 Thursday, June 14, 12

Slide 66

Slide 66 text

1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 3. Add “ Doe” at position (15 - 10 + 5) Thursday, June 14, 12

Slide 67

Slide 67 text

1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 3. Add “ Doe” at position (15 - 10 + 5) 1 Thursday, June 14, 12

Slide 68

Slide 68 text

1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 3. Add “ Doe” at position (15 - 10 + 5) 2 Thursday, June 14, 12

Slide 69

Slide 69 text

1. Go to position 0 and remove 10 characters 2. Add “Hello” at position 0 3. Add “ Doe” at position 10 Thursday, June 14, 12

Slide 70

Slide 70 text

Operational Transformations are executed both on the server and the client Thursday, June 14, 12

Slide 71

Slide 71 text

The server keeps its own representation of the document Thursday, June 14, 12

Slide 72

Slide 72 text

and only relays operations to clients as JSON Thursday, June 14, 12

Slide 73

Slide 73 text

JavaScript allows you write the rules once Thursday, June 14, 12

Slide 74

Slide 74 text

but long-polling is awful Thursday, June 14, 12

Slide 75

Slide 75 text

Wave Thursday, June 14, 12

Slide 76

Slide 76 text

it’s evident the web needs something better for realtime Thursday, June 14, 12

Slide 77

Slide 77 text

Ian Hickson or hixie Thursday, June 14, 12

Slide 78

Slide 78 text

Thursday, June 14, 12

Slide 79

Slide 79 text

websocket Thursday, June 14, 12

Slide 80

Slide 80 text

socket.io is born Thursday, June 14, 12

Slide 81

Slide 81 text

at first as a websocket API Thursday, June 14, 12

Slide 82

Slide 82 text

but then gained crucial features for web app dev Thursday, June 14, 12

Slide 83

Slide 83 text

XML Thursday, June 14, 12

Slide 84

Slide 84 text

XML JSON Thursday, June 14, 12

Slide 85

Slide 85 text

events Thursday, June 14, 12

Slide 86

Slide 86 text

multiplexing Thursday, June 14, 12

Slide 87

Slide 87 text

who uses it Thursday, June 14, 12

Slide 88

Slide 88 text

gree Thursday, June 14, 12

Slide 89

Slide 89 text

zynga Thursday, June 14, 12

Slide 90

Slide 90 text

Thursday, June 14, 12

Slide 91

Slide 91 text

socket.io Thursday, June 14, 12

Slide 92

Slide 92 text

yammer Thursday, June 14, 12

Slide 93

Slide 93 text

zendesk Thursday, June 14, 12

Slide 94

Slide 94 text

trello Thursday, June 14, 12

Slide 95

Slide 95 text

flightaware Thursday, June 14, 12

Slide 96

Slide 96 text

cloud9 Thursday, June 14, 12

Slide 97

Slide 97 text

socket.io gained some weight Thursday, June 14, 12

Slide 98

Slide 98 text

“I love the 500 lines of embedded Flash websocket emulation code in the socket.io-client” said no one ever Thursday, June 14, 12

Slide 99

Slide 99 text

engine.io meets socket.io Thursday, June 14, 12

Slide 100

Slide 100 text

very clear goals Thursday, June 14, 12

Slide 101

Slide 101 text

1. upgrade instead of fallback Thursday, June 14, 12

Slide 102

Slide 102 text

Thursday, June 14, 12

Slide 103

Slide 103 text

connects right away on every browser and every network Thursday, June 14, 12

Slide 104

Slide 104 text

then probe WebSocket on the side Thursday, June 14, 12

Slide 105

Slide 105 text

we can lazy-load Flash - yay! Thursday, June 14, 12

Slide 106

Slide 106 text

2. multi-core support Thursday, June 14, 12

Slide 107

Slide 107 text

Thursday, June 14, 12

Slide 108

Slide 108 text

Thursday, June 14, 12

Slide 109

Slide 109 text

require(‘cluster’) Thursday, June 14, 12

Slide 110

Slide 110 text

FD socket.io socket socket.io socket socket.io socket socket.io socket require(‘cluster’) FD FD FD Thursday, June 14, 12

Slide 111

Slide 111 text

sorry, no Thursday, June 14, 12

Slide 112

Slide 112 text

req socket.io socket require(‘cluster’) req WS Thursday, June 14, 12

Slide 113

Slide 113 text

3. websocket compatible Thursday, June 14, 12

Slide 114

Slide 114 text

same API on the server as websocket.io Thursday, June 14, 12

Slide 115

Slide 115 text

same API on the client as WebSocket Thursday, June 14, 12

Slide 116

Slide 116 text

4. lightweight Thursday, June 14, 12

Slide 117

Slide 117 text

6kb minified + gzipped Thursday, June 14, 12

Slide 118

Slide 118 text

as a result, new socket.io client is 300LOC Thursday, June 14, 12

Slide 119

Slide 119 text

Socket.IO 1.0 = engine.io + webscale + simple Thursday, June 14, 12

Slide 120

Slide 120 text

cdn.socket.io Thursday, June 14, 12

Slide 121

Slide 121 text

new website Thursday, June 14, 12

Slide 122

Slide 122 text

Release date = Node 0.8 Thursday, June 14, 12

Slide 123

Slide 123 text

Thursday, June 14, 12

Slide 124

Slide 124 text

Thursday, June 14, 12

Slide 125

Slide 125 text

Thursday, June 14, 12

Slide 126

Slide 126 text

questions? Thursday, June 14, 12