Citrix_NetscalerTechnical_Overview.ppt

citrixnetscalertechnicaloverview johannwimmersalesmanagerapp networkinggroupcitrixsystemscentraleurope onlycitrixhasthebestapplicationdeliverysolutionforallapptypes lan mobileuser branch 6 000 enterprisedeployments 75 ofinternetusers netscalerisprovenintheworld smostdemandingenvironments trendsdrivingthebusinessproblem webificationofapplications traditionalapproachesmisstherealissue teamsofconsultants biggerpipes latency identifyingtherealproblem enterprisedatacenter lotsofroundtrips internet today sapproach toocomplex l4 7trafficmgr applicationserver webserver webserver webserver compression ddosprotection sslacceleration vpngateway cache toocomplex cannotsolvecompleteproblem applicationserver applicationserver cleartext encrypted applicationdeliverysolution netscaler builttodeliverapplications webservers application databaseservers customwebapps hownetscalersolvestheproblem enterprisedatacenter lotsofroundtrips internet 15xfaster howwedoit realenterpriseapplicationsarecomplex webservers appservers emailservers fileservers mainframesandterminalservers databases sna sqljdbc ejbservletssoap sqlnetxml soap http telnetssh applicationusersinmultiplelocations mapi netbioscifs cgi asp jsp web doesnotalwaysequal applications webservers appservers emailservers fileservers mainframesandterminalservers databases sna sqljdbc ejbservletssoap sqlnetxml soap http telnetssh applicationusersinmultiplelocations mapi netbioscifs cgi asp jsp netscaleracceleratesallapplicationtraffic webservers appservers emailservers fileservers mainframesandterminalservers databases sna sqljdbc ejbservletssoap sqlnetxml soap http telnetssh applicationusersinmultiplelocations mapi netbioscifs cgi asp jsp netscalerapplicationdeliverysystem whatreallyhappensbehindthescenes webservers oracleappservers oracledatabases sqljdbc oracleuser example oraclefinancials theresult fasterresponsetime 6 8sec 3 6sec afternetscaler beforenetscaler 11 9sec 1 2sec afternetscaler beforenetscaler 224sec 13 8sec afternetscaler beforenetscaler simplenon webappoverawan accessingreportdataoverawan accessingreportdataonalan 2x 10 x 15x source tcsconsultingservices performanceanalysisoforaclee businessapplications 2005 notjustfororacle componentsneededforapplicationdelivery dynamiccaching mpcompression requestswitching tcpoptimization webcompression acceleration intrusion rba ddos sslacceleration security access 2 decrypt authenticate analyzeeveryrequest 3 queue dispatchvalidrequests 1 receive terminateconnections 4 switchrequests multiplexoverpersistentconnections requestswitching application1application2 application3 requestswitching whatistcpoffload httptrafficisusuallymanyshortlivedconnectionsserversperformpoorlywithshortlivedconnectionstcpoffloadseparatesqueriesfromconnectionsthisallowsittomultiplexmanyqueriesonafewconnectionsclientsdonotknowthedifferenceserversprocessmuchlesstcp ipandthusperformbettertcpoffloadalonecanmakeabigdifferenceinperformance clients tcpoffload ii netscalerreceivesandterminatesclientconnectionclienttransmitsapplicationrequestsnetscalerestablishesserverconnection netscalertransmitsclientrequestsovernetscaler serverconnectionadditionalclientsfollowsameproceduremultipleclientrequestsaretransmittedacrosscommonserverconnectiontcpconnectionprocessingisminimized server whatislayer7loadbalancing ahttprequesthasseveralcomponentsaurl e g loadbalancingdecisionscanbebasedonhttp directrequeststogroupsofserversbasedontheirurlkeepusersthathaveloggedintoanapplicationgoingtothesameserverusedtosendspecificurlstospecificserversallrequeststoapp cgigoestoserver1 app2 cgigotoserver2 etc gslb globalserverloadbalancing distributesnetworktrafficacrossmultiplesitesreducesapplicationlatencydistributesserverloadacrossmultiplesitesdisasterrecovery differentgslbmethods basicdistributiondisasterrecoverygeographicproximityfastestsite whatiscaching remoteemployees customers mobileusers suppliers partners additionalrequests initialrequest whataboutdynamiccaching staticcontentiseasy imagesdon tchangebutenterpriseapplicationsaren tjustimagescontentisdynamicallygeneratedbasedonthedatabasedifferentuserswillseedifferentcontentformanyappsbut manypages responsesarecommonforusersmanysalesreportssummarystatementsportalpagesthesepagescanbecachedtoo howdynamiccachingworks breakdowntheurisimilarpagesseemtohavedifferenturlsname valuepairstendtobethesameexceptforuseridentifiersyoucantellthecachetoonlyusespecificvariablesforcachehits caching simpact eliminatescontentgenerationtimefrequentlygenerated accessedreportscanbecachedforexamplequarterlyreportsworkswithstaticanddynamiccontentappliestopackagedapplications oracle sap etc workswithcustomapplications tomcat bea j2ee etc reducesloadsignificantloadreductiononapplicationserversanddatabases netscalerdemo caching whatishttp web compression netscaler stransparentcontentcompressionmaximizepayloadperpacketincreaseapplicationperformance what sinsidecompression modernbrowserssupport gzip compressionuponreceipt theywillautomaticallydecompressenduserdoesn tknow carenetscalerdetermines compressability basedonuseragentheader gzip issimilarto winzip ineffectivenesscompressionratiovariesfrom3 1to5 1onaveragevariesbycontenttype appcompressextreme differentialcompression datacenterapplications endusers onsubsequentrequestsonlychangeddataissent virtuallyinstantresponsetimeforendusers appcompressextreme ii compressionratioofupto15xnotuncommonthinklatency notthroughputonlyworkswithhtmlcontentexistinggzipwillcatchothercases appcompressmpmulti protocolcompression datacenterapplications endusers nowalsocompresseslargefilessentoutbyusers uploadsanddownloadsanyapplicationanyuserlocation independenttestlabresults enterpriseapplicationreportquery 1x 15 1sec 7x 2 0sec 44x 0 3sec noacceleration std httpcompression appcompressextreme source thetollygroup june2005 testapplications google web oracle enterprise standardwebpagewithnochanges 1x 16 5sec 22x 0 7sec noacceleration std httpcompression appcompressextreme standardwebpagewithmoderatechanges 1x 15 8sec 4x 4 3sec 8x 2 0sec noacceleration std httpcompression appcompressextreme 4x 4 4sec sslacceleration allsslconnectionsterminateonsystemcontentisdecryptedlayer7 http policiesareappliedi e switching acceleration etc connectionforwardedtoserverserverdoesnothavetotakeencryptionloadsignificantlyspeedsupserverinfrastructure sslacceleration ii backendencryptionissupportednscanencryptconnectionstobackendserverstillimprovesperformancebec