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copied!<blockquote> <p>Is JRuby the only option?</p> </blockquote> <p>Don't speak in absolutes! :) JRuby has the benefit of being able to call Java libraries like CF, but it's still an emerging platform, albeit one with great potential on the JVM. </p> <blockquote> <p>Will invoking our jar-packaged Java code be still fast enough?</p> </blockquote> <p>If you are still going to run on a JVM language like CF or JRuby then I would say yes. </p> <blockquote> <p>Is Linux required along with switching to Rails? (I don't like Rails on Windows)</p> </blockquote> <p>Linux is not required for JRuby (see <a href="http://www.iowaosum.com/install-jruby" rel="nofollow">here</a>) - remember JRuby is just another JVM language and the benefit of the JVM is platform independence. If you are going for plain Rails I would recommend going over to Linux - I've tried using Rails on Windows before and it's not pretty. Everything you read in terms of Rails tutorials etc. will assume a favour of Linux. </p> <blockquote> <p>What about scalability? Do you recommend Sinatra to handle our traffic?</p> </blockquote> <p>Sinatra is a very slimmed down framework which essentially uses simple regex routing rules. I would use it for small projects, but for a production application that is likely to grow, then no. You are better off getting the organisational benefits of Rails. </p> <blockquote> <p>Will it be possible to place this configuration in a cloud?</p> </blockquote> <p>I <a href="http://www.engineyard.com/blog/2011/jruby-on-appcloud-available-through-beta-program/" rel="nofollow">believe</a> Engine Yard do JRuby hosting. Heroku do Rails PaaS hosting. Heroku might not be a good match if you are using JRuby or calling Java from JRuby, but for a plain Rails application it's very cool. </p> <p>And as others have pointed out - CF is not the problem, the problem is how your application was written and organised. You can write crap Rails code too, remember. </p> <p>Hoep all that helps you somewhat with your decision. </p>

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