Sam Pierson's Blog

Ikai Lan, JRuby
Rails 2.2 is thread safe.  Threads are safe to use on the JVM.  Use threads and use their performance advantage.
Warble (from Sun – Charles Nutter et al) will package a complete Rails app for deployment on a Java App Server.
Lacks the ease of Passenger.
Lots of weird incompatibilities.  Timeout.  RubyIO.  Namespace issues.  Metaprogramming.  You [...]

Note to self before I delete this entry.
This will redirect an entire site:
Server Admin -> Your server -> Web -> Your site -> Aliases -> Url Aliases and Redirects
Type = RedirectMatch
Pattern = .*
Path = http://example.com