Slide 1

Slide 1 text

orange — Client side concurrency made simple

Slide 2

Slide 2 text

rubysauna.org

Slide 3

Slide 3 text

heartrate.js

Slide 4

Slide 4 text

No content

Slide 5

Slide 5 text

No content

Slide 6

Slide 6 text

No content

Slide 7

Slide 7 text

No content

Slide 8

Slide 8 text

Concurrency

Slide 9

Slide 9 text

A B C

Slide 10

Slide 10 text

A B C

Slide 11

Slide 11 text

A B C

Slide 12

Slide 12 text

Concurrency is hard

Slide 13

Slide 13 text

A B C

Slide 14

Slide 14 text

Concurrency

Slide 15

Slide 15 text

Barber z z

Slide 16

Slide 16 text

Barber Customer z z Sleeping?

Slide 17

Slide 17 text

Barber Customer

Slide 18

Slide 18 text

Barber Customer Working?

Slide 19

Slide 19 text

Barber Customer

Slide 20

Slide 20 text

Barber

Slide 21

Slide 21 text

Barber Customer

Slide 22

Slide 22 text

Barber

Slide 23

Slide 23 text

Barber Customer ?

Slide 24

Slide 24 text

Barber Customer Crap.

Slide 25

Slide 25 text

Barber

Slide 26

Slide 26 text

Barber Customer

Slide 27

Slide 27 text

Barber z z Crap.

Slide 28

Slide 28 text

Concurrency in the browser

Slide 29

Slide 29 text

JavaScript and the golden thread

Slide 30

Slide 30 text

No content

Slide 31

Slide 31 text

No content

Slide 32

Slide 32 text

No content

Slide 33

Slide 33 text

foo() 10ms 20ms 30ms 40ms click handled click fired setInterval (10ms)

Slide 34

Slide 34 text

No content

Slide 35

Slide 35 text

Synchronous —vs— Asynchronous

Slide 36

Slide 36 text

WebWorkers

Slide 37

Slide 37 text

JavaScript Thread Worker

Slide 38

Slide 38 text

Worker JavaScript Thread

Slide 39

Slide 39 text

Worker Worker JavaScript Thread

Slide 40

Slide 40 text

Dedicated, Shared & Inline Workers

Slide 41

Slide 41 text

No content

Slide 42

Slide 42 text

orange

Slide 43

Slide 43 text

The queue

Slide 44

Slide 44 text

Define a worker

Slide 45

Slide 45 text

# workers/sum.coffee importScripts 'orange/worker.js' perform (data)-> data.numbers.reduce (a, b)-> a + b

Slide 46

Slide 46 text

# workers/sum.coffee importScripts 'orange/worker.js' perform (data)-> data.numbers.reduce (a, b)-> a + b

Slide 47

Slide 47 text

Create a new job

Slide 48

Slide 48 text

job = new Orange.Job('sum', numbers: [1..100])

Slide 49

Slide 49 text

job = new Orange.Job('sum', numbers: [1..100]) job.on 'success', (response) -> console.log('Sum', response) job.perform()

Slide 50

Slide 50 text

Events

Slide 51

Slide 51 text

job.on 'success', (response)-> job.on 'complete', -> job.on 'error', (error)-> job.on 'failure', (error)->

Slide 52

Slide 52 text

Logging

Slide 53

Slide 53 text

# workers/sum.coffee importScripts 'orange/worker.js' perform (data)-> log 'The background worker Gotham deserves ...' data.numbers.reduce (a, b) ->a + b

Slide 54

Slide 54 text

Batches

Slide 55

Slide 55 text

batch = new Orange.Batch

Slide 56

Slide 56 text

batch = new Orange.Batch job = new Orange.Job('sum', [1..100]) batch.push job batch.perform()

Slide 57

Slide 57 text

batch = new Orange.Batch [job1, job2, job3]

Slide 58

Slide 58 text

batch.on 'complete', (jobs) -> batch.on 'job:success', (job) -> batch.on 'job:complete', (job)-> batch.on 'job:error', (job) -> batch.on 'job:failure', (job) ->

Slide 59

Slide 59 text

job.getResponse() job.getLastError()

Slide 60

Slide 60 text

Configuration

Slide 61

Slide 61 text

Orange.Config.set maxWorkerPoolSize: 4 maxRetries : 3 workersPath : '/lib/workers/'

Slide 62

Slide 62 text

Retry mechanism and exponential back–off

Slide 63

Slide 63 text

Error handling

Slide 64

Slide 64 text

job.on 'error', (error)-> throw error BatchStateTransitionError JobStateTransitionError ResponderNotFoundError …

Slide 65

Slide 65 text

No content

Slide 66

Slide 66 text

Roadmap >0.2.0

Slide 67

Slide 67 text

Customized Worker Shim Test coverage Data serialization Benchmarking

Slide 68

Slide 68 text

Forward arbitrary method calls to worker? Custom events? Instrumentation? Inline Workers? Helper modules?

Slide 69

Slide 69 text

Kiitos!

Slide 70

Slide 70 text

@polarblau