MirrorBrain是一个使用镜像服务器来运行内容分发系统的框架。Itsolvesachallengethatmanypopularopensourceprojectsface:afloodofdownloadrequests,oftenmagnitudesmorethanasinglesitecouldpracticallyhandle.Acentral(andprobablythemostobvious)partisa"downloadredirector"thatautomaticallyredirectsrequestsfromWebbrowsersordownloadprogramstoamirrorservernearthem.Choosingasuitablemirrorforauser'srequestisthekey,andMirrorBrainusesgeolocationandglobalroutingdatatomakeasensiblechoiceandachieveload-balancingforthemirrorsatthesametime.Thealgorithmisbothsophisticatedandeasytocontrolandtune.Inaddition,MirrorBrainmonitorsmirrors,scansthemforfiles,generatesmirrorlists,andmore.
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