One performance test shows Ruby on Rails to be 8 times slower than the equivalent application written using Java, Spring, and Hibernate. I expect a response from the Ruby community, but I’ve read that Ruby is slow in other places as well. This shouldn’t surprise anyone, Ruby is a lot younger than Java. Companies like Sun and IBM have committed countless developer hours to improving Java’s performance.
Update: Bruce Tate explains Ruby on Rails’ compelling value proposition.
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