I am planning to build a new data center.I plan to use one turnkey vendor to build infrastructure and procure IT equipment.Most of my vendors can do turnkey.If one vendor is good at infrastructure and I select him, he will partner with other vendor t...

Suppose a client sends a url request for a website to a web proxy.If the web proxy doesn't have cache for that url request, what does it do currently in practice?Does it reject the request and thus return error to the client?Does it try to fetch webs...