Live Mongrel Debugging and Recovery - igvita.comBy Ilya Grigorik on February 19, 2008 Unit::Test, RSpec, and good old manual testing are all a must before every deployment. However, testing is a tricky trade as no matter what your code coverage is, lack of failures does not mean lack of bugs - that is, unless you're really into formal verification. Not to mention, unless you have a true staging environment, certain bugs are just not reproducibl
http://d.hatena.ne.jp/drawnboy/20060613/1150170093
