Liquid Stream Processing!Across Web Browsers!and Web ServersMasiar Babazadeh!@masiarbAndrea Gallidabino!@agallidabinoCesare Pautasso!@pautasso

University of Lugano Switzerland

name.surname@usi.ch

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Web Liquid Streams2

WebRTC

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var k = require('wls.js');!setInterval(function(){! getTemperature(!! ! ! function(temp, sensor_id){! k.send({! "temperature" : temp,! "id" : sensor_id,!! ! ! ! "ts" : new Date().getTime(),! });! ! ! }!! );!}, 1000);

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{! topology : {! id : “HAS_topology”,! operators : [! {! id : “producer”,! script : “pi_prod.js”,!! ! ! ! ! constraints : [“temperature”],! },! …!! ! ! ! ],!! ! ! ! bindings : [!! ! ! ! ! {!! ! ! ! ! ! from : “producer”,!! ! ! ! ! ! to : [“filter”, “web_consumer_1”]!! ! ! ! ! ! type : “broadcast”!! ! ! ! ! },!! ! ! ! ! …!! ! ! ! ]!! ! }!}!

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C

C

P

C

F

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Filter Peers

Compute the ranking

F

CP

F C

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F C

P

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F C

P

C

F

Operator Elasticity

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F

Fault Tolerance

FXF

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C

C

P

C

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P F C

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P F C

F

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1

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Every 10k msgs

Every 5k msgs

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Disconnection

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2

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2

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2

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WebRTC

26Thank you.

Liquid Stream Processing!Across Web Browsers!and Web ServersMasiar Babazadeh!@masiarbAndrea Gallidabino!@agallidabinoCesare Pautasso!@pautassoname.surname@usi.ch