"One of an e-business' most valuable assets is its Web server.
For an enterprise looking for room to grow, Zeus claims to be the
best choice. Zeus does have a track record in this regard, being
the main Web server used by eBay, Lycos, Infoseek, and Blue
Mountain. It also claims to host one out of every 35 Web
"Apache uses a dedicated I/O process for each connection
request. This might not be such a bad thing if an infinite number
of connection requests could be created, but that isn't the case.
Apache is limited to 256 connection requests. Zeus uses a small
number of processes, but each process can handle, as previously
noted, tens of thousands of connection requests. Even one Zeus
thread can handle many more connection requests than Apache as a
"One should bear in mind that Zeus' capabilities do not really
shine unless there are a large number of connections. Thus,
administrators will not really benefit from Zeus over Apache unless
they have high traffic volume. That is why eBay, one of the most
heavily trafficked e-commerce sites, uses Zeus. Zeus runs rings
around Apache in terms of serving massive amounts of traffic."
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