The Massive Challenge Java Technologies for Modern Enterprise Applications .pdf

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1、25184-TheMassiveChallenge:JavaTechnologiesforModernEnterpriseApplicationsMichaelNascimentoSantosGoalUnderstandhowtopickandcombinemodernJava-basedtechnologiestobuildtailor-madeenterprisesolutionsfortoday'scomplexproblemsAgenda•Caseofstudy:Brazilelectronic-basedsystems•Mostcommonarchitectures(an

2、dwhytheyfail)•Buildingsolutionsthatscale•Comparingapproaches•ConclusionBrazilImages:SalvatoreVuono(www.freedigitalphotos.net)HowitwasinBrazil•Invoices(fiscaldocuments,notbills)arequiteformaldocuments–Containseveralstandarditems,butcustomizeditemsaswell•Notastandardizedformatthough•Inspectorsha

3、dbasicinformationinsystems,buthadtochecktonsofpiecesofpaper–Notveryeffectiveanderror-proneforallpartsinvolved•TrueforseveralotherlegaldocumentsHowitisnow•Invoicesmustbeelectronicallytransmittedfirst–SOAP-basedwebservices–Signeddocumentwithdigitalcertificates–Additionalformatrestrictionsimposed

4、forperformancereasons–Ticketnumberreturned•Anotherasynchronouswebserviceisusedtocheckprocessingstatususingtickets•Uponapproval,acombineddocumentmustbestoredandmadeavailableforthecustomerNotsofast!•Uponapproval,aphysicalpaperdocumentisusedfortransportation–Itsformatstillvariesalotpercompany,ope

5、rationetc•Whatif:–Thegovernmentsystemisdown?–Thegovernmentsystemisslow?–Internetconnectiongoesdown?–Invoicesgetrejected?–Thedocumentneedsto/getscancelled?–...Allsizes!•MightbebuildingastandaloneproductorextendingthecurrentERP•Companymightbeabig/medium/smallemitterandabig/medium/smallreceiver–F

6、ewhundredstofewhundredthousanddocumentsperday!!!•Yourenvironmentxtheirenvironment•SãoPauloorRioversussomeremoteareainthemiddleofnowhere–EventuallyeverysinglebusinesswillhavetouseitMostcommonarchitectures•Usuallyastandaloneproduct•Severaldon'tusefullJavaEEcontainer(andsometimesnotevenSpring)•Ex

7、tremelyfocusedonawebapplicationfortracking•Builtaroundtheassumptioncomponents(localdatabase,localserver,governmentserver,Internetconnection)willperformwellDoIreallyneedtoexplainwhytheyfail?Somereasons...•Samegroupofconsultantsimplementi