What are some common Rails performance gotchas? Just a tweet would be great, but links to blog posts, diagnostics, etc. would be awesome too
@eachus :trollface: Rails 1.9+ is a bytecode VM and GIL doesn't block parallel I/O. :P @steveklabnik
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@wycats@steveklabnik I love Ruby. But you asked for "gotchas". GIL can be a pretty big gotcha sometimes. But you knew that.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@wycats@steveklabnik That's only semi-compiled. And GIL doesn't block parallel I/O, but you'd better be careful with your threads. :o)Thanks. Twitter will use this to make your timeline better. UndoUndo
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