MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Guia de Instalação descarregar pdf (Página 47)

Edge and Origin congurations

Feature in Flash Media Interactive Server; requires Flash Player 6 or later.

InversionspriortoFlashMediaServeryouhadtopurchasetheEdgeandOrigineditionsto

achieve distributed caching and load balancing. is functionality is now built into Flash Media

InteractiveServer.FlashMediaInteractiveServerprovidesanenterprise-readyarchitecture

designed to simplify load balancing, failover, and clustering to ensure maximum availability over

largeregions.efollowinggureshowstheEdgeandOriginarchitecture.

Edge/Origin architecture

Edge Server

London

Edge Server

T o kyo

Origin Server

New Y o rk City

Client

How Edge and Origin deployments work

EdgeandOriginservercongurationsimproveperformancebydistributingtheserverload

among manycomputersonanetwork.WithanEdgeandOrigindeploymentstrategy,all

connection requestsfromclientsareredirectedtoanEdgeserver.econgurationalsoletsyou

maximizeyournetworkifyouaresupportingalargelocalnetwork.ByplacingEdgeserversin

remoteocelocations,theEdgeserverscachemedialeslocally,soeachstreamdoesnotneed

toaccesstheOrigin(host)serverforeachstream.

TypicallyEdgeandOrigindeploymentsarebestusedwithone-waystreamingservices.When

using customserver-sideapplicationstoenablereal-timecommunication,theEdgeserver

strictly handlestherequestsonbehalfoftheOriginserver.Clientconnectionsthenmake

roundtripstotheOriginservertoruntheapplication.

InFlashMediaInteractiveServer3.5,Edge-levelsupportforbandwidthdetectionandstream

lengthdetectionhasbeenintegrated.erstserverinthechain(EdgeorOrigin)receivinga

stream call also handles the bandwidth check and stream length check without calling the

Originserverscriptlayer.isfeatureiscompatiblewiththeFLVPlaybackcomponentforFlash

8,FlashCS3Professional,andFlashCS4Professional.

Whenaclientrequestisreceived,theEdgeserverhandlesthetasksitcan,andthenmakesa

connectiontotheOriginserverforanyadditionaldatarequired.WhentheOriginserverfullls

therequest,thedataissentbacktotheEdgeserver,andthenontotheclient.Totheclient,it

appearsthattheconnectionismadedirectlytotheapplicationrunningontheOriginserver.

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MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Guia de Instalação Página 47