Lighttpd
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About
Do you want a nice fast httpd without the bulk of Apache. Try [1].
Lighttpd comes highly recommended for UML / Xen servers with very limited RAM.
In fact, I would recommend it for any web server chore where you don't need apache in it's full massive magnificence.
PHP with fastcgi
Yes, you can run PHP as fast (or faster) than mod_php with fastcgi... (explain)
Rails :- aka Ruby on Rails often uses lighttpd (pronounced "lighty") with fastcgi for extendable, fast deployment. [2] If you have memory constraints (zen box etc.) then lighty might be a feasible option else consider Apache(2.2+) + Mongrel. Gives you superior performance, scalability and makes deployment of rails apps easier. mongrel.rubyforge.org
