新時(shí)代里咨詢對我們的影響Massagingheony

MassagingthePony:

MessageQueuesandYouShawnRiderPBSEducationDjangoCon2010WhatisaMessageQueue?Asystemforenablingasynchronousprocessingofdiscretetasks.Superawesome.Whataretheygoodfor?AlleviateserverissuesbyoffloadingprocessingWhataretheygoodfor?MakebetteruserexperiencesWhataretheygoodfor?Increasethereliabilityofthirdpartyserviceintegrations.Whataretheygoodfor?BackgroundmediaprocessingWhataretheygoodfor?RepeatingTaskscanreplaceCronjobsKeepallyourcodeinyourprojectAvailableMQSolutionsTherearemanysolutionsoutthere.Tonameafewofthem:RabbitMQAmazonSimpleQueueSystemApacheMQGearmanOpenAMQPeafowlQ4MStarlingSunJavaSystemMessageQueueMessageQueueProtocolsAMQP:AdvancedMessageQueuingProtocolJMS:JavaMessagingServiceSTOMP:StreamingTextOrientedMessagingProtocolCriteriaforBrokerSelectionThefollowingcriteriawereimportanttousinselectingasolution.Youmayhavesomedifferentneeds.HandlingexceptionsandrecoveryLowlevelofrequiredmaintenanceEaseofdeploymentPersistentqueuingCommunitysupportWhatlanguageisitwrittenin?Howcompatibleisthatwithourcurrentsystems?ClustersupportFailsafeMQBrokersMustbeabletosurviveaserverfailure.UponrestartingtheMQBroker,processingshouldresumefromthelastun-processedmessagesinqueuesQueueDurabilityTheMessagesQueueBrokermustbeabletoreconstructthequeueswhenitisrestarted.MessagePersistenceTheMessages(taskstobecompleted)mustpersistbetweenshutdownsandrestartsofMQServerOurChoiceCelery(aDjangotaskmanagementapp)Carrot(Djangomiddleware)PyAMQP(Pythonmodule)RabbitMQ(MQBrokersoftware)TheProductionSystemWebappDatabaseWorkerServer(s)CeleryRabbitMQMQinDevelopmentEnvironsItisimportanttobeabletodevelopMessageQueuetasksinDjangowithoutbeingconcernedaboutrunningthebrokerprocess,queuesetup,persistenceetc.MQinDevelopmentEnvironsCarrotcanbesetuptousedifferentqueuingbackendfordevelopmentpurposesGhettoQprovidesdatabasebackendforcarrotwhereadatabaseservesasthequeuestorageThebrokerisasimpleDjangoapplicationthatmonitorsthequeueinDBInefficient,thereforeonlysuitablefordevelopmentenvironmentsCARROT_BACKEND=‘‘qhettoq.taproot.Database’EaseafutureMQimplementationIsolatefunctionalityintoreusablecomponents.RecycleExistingCodeDjango,HTTPRequests&MQMostfunctionalitiesprovidedthroughDjangoapplicationsaretightlycoupledwithHTTPrequestse.g.formdataprocessingInordertoasynchronouslyexecuteatask,Celery(anytaskmanagementplatform)mustserialize&storeparametersHTTPrequestsareusuallylargeandnoteasilyserializable.e.g.WSGIrequestsThePickleableHTTPRequestObjectUsingPickleableHttpRequestifrequest.GET.get(‘download’):try:result=EnrollmentCSVExportTask.delay(PickleableHttpRequest(request,attributes=\[‘user’,‘a(chǎn)dmin_current_organization’]))MakingMessageQueueTasksItisfastandeasytoaddadecoratortospecificfunctionstocreateMessageQueuetasks.fromcelery.decoratorsimporttask@taskdefadd(x,y):returnx+yExplicitlyInheritfromCelery’sTaskObjectThenWhat?SomeMessageQueuetaskscancompletewithnonotificationrequired.Forothertasks:NotifybyemailUseanAJAXlistenertonotifyusersSomeothermessagingInReviewChooseyourMQsolutionwiselySetuparobustsystemLeverageyourexistingcodeReplacetroublespotsastheycomeupProfit!MessageQueuesMakeLifeBetter9、靜夜四無無鄰，荒居居舊業(yè)貧。。。12月-2212月-22Saturday,December24,202210、雨中黃葉葉樹，燈下下白頭人。。。06:54:3006:54:3006:5412/24/20226:54:30AM11、以以我我獨(dú)獨(dú)沈沈久久，，愧愧君君相相見見頻頻。。。。12月月-2206:54:3106:54Dec-2224-Dec-2212、故人江江海別，，幾度隔隔山川。。。06:54:3106:54:3106:54Saturday,December24,202213、乍見翻翻疑夢，，相悲各各問年。。。12月-2212月-2206:54:3106:54:31December24,202214、他鄉(xiāng)鄉(xiāng)生白白發(fā)，，舊國國見青青山。。。24十十二二月20226:54:31上上午06:54:3112月月-2215、比不不了得得就不不比，，得不不到的的就不不要。。。。十二月月226:54上上午午12月月-2206:54December24,202216、行動(dòng)動(dòng)出成成果，，工作作出財(cái)財(cái)富。。。2022/12/246:54:3106:54:3124December202217、做前，能能夠環(huán)視四四周；做時(shí)時(shí)，你只能能或者最好好沿著以腳腳為起點(diǎn)的的射線向前前。。6:54:31上上午6:54上上午06:54:3112月-229、沒有失敗敗，只有暫暫時(shí)停止成成功！。12月-2212月-22Saturday,December24,202210、很多事事情努力力了未必必有結(jié)果果，但是是不努力力卻什么么改變也也沒有。。。06:54:3106:54:3106:5412/24/20226:54:31AM11、成功就就是日復(fù)復(fù)一日那那一點(diǎn)點(diǎn)點(diǎn)小小努努力的積積累。。。12月-2206:54:3106:54Dec-2224-Dec-2212、世間成事，，不求其絕對對圓滿，留一一份不足，可可得無限完美美。。06:54:3106:54:3106:54Saturday,December24,202213、不知香積寺寺，數(shù)里入云云峰。。12月-2212月-2206:54:3106:54:31December24,202214、意志志堅(jiān)強(qiáng)強(qiáng)的人人能把把世界界放在在手中中像泥泥塊一一樣任任意揉揉捏。。24十十二二月20226:54:31上上午06:54:3112月月-2215、楚塞塞三湘湘接，，荊門門九派派通。。。。十二月月226:54上上午午12月月-2206:54December24,202216、少少年年十十五五二二十十時(shí)時(shí)，，步步行行奪奪得得胡胡馬馬騎騎。。。。2022/12/246:54:3106:54:3124December202217、空空山山新新雨雨后后，，天天氣氣晚晚來來秋秋。。。。6:54:31上上午午6:54上上午午06:54:3112月月-229、楊柳散散和風(fēng)，，青山澹澹吾慮。。。12月-2212月-22Saturday,December24,202210、閱讀一一切好書書如同和和過去最最杰出的的人談話話。06:54:3106:54:3106:5412/24/20226:54:31AM11、越是沒有有本領(lǐng)的就就越加自命命不凡。12月-2206:54:3106:54Dec-2224-Dec-2212、越是無能能的人，越越喜歡挑剔剔別人的錯(cuò)錯(cuò)兒。06:54:3106:54:3106:54Saturday,December24,202213、知人者者智，自自知者明明。勝人人者有力力，自勝勝者強(qiáng)。。12月-2212月-2206:54:3106:54:31December24,202214、意志堅(jiān)堅(jiān)強(qiáng)的人人能把世世界放在在手中像像泥塊一一樣任意意揉捏。。24十十二月20226:54:31上午午06:54:3112月-2215、最具挑戰(zhàn)性性的挑戰(zhàn)莫過過于提升自我我。。十二月226:54上上午12月-2206:54December24,202216、業(yè)余生活要要有意義，不不要越軌。2022/12