Not at all, as the latest web framework benchmarks showed: http://www.techempower.com/benchmarks/#section=data-r8&hw=i7&test=json http://www.techempower.com/ben

Not at all, as the latest web framework benchmarks showed: http://www.techempower.com/benchmarks/#section=data-r8&hw=i7&test=json http://www.techempower.com/benchmarks/#section=data-r8&hw=i7... (see rack-jruby, 86.3%) It's really a question of how and what you run. And yes, the JVM is one of those options.