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GitHub User: redgetan
I had a similar problem, wherein my updated code is not being loaded by unicorn even after reload. Turns out that it's because I have my unicorn config file set preload_app to true, and sending a HUP signal, which unicorn_init.sh uses for reload and restart, would not make unicorn load the code changes (see HUP under http://unicorn.bogomips.org/SIGNALS.html). So I modified deploy.rb to use
%w[start stop reload upgrade].each do |command|
instead and use 'reload' for changes in unicorn.rb and 'upgrade' for rails code changes