high traffic websites

[email protected] (Negin Nickparsa)
Newsgroups php.general
Message-ID <CAJGV41f6pu6BoRZEFW=9WsBs7kC5mDPfUy39WZ4Gx4rghfE49g@mail.gmail.com> 
In general, what are the best ways to handle high traffic websites?

VPS(clouds)?
web analyzers?
dedicated servers?
distributed memory cache?


Sincerely
Negin Nickparsa
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