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by paulannesley 3776 days ago
Yes, http://unicorn.bogomips.org/ popularized this for ruby / rack / rails with its forking model and preload_app option. http://puma.io/ does the same thing, but additionally runs multiple threads in each process.

The garbage collector in Ruby 1.8 / 1.9 negated the benefits of copy-on-write forking, but that's fixed since Ruby 2.0