# File lib/active_support/vendor/memcache-client-1.5.1/memcache.rb, line 636 def cache_incr(server, cache_key, amount) socket = server.socket socket.write "incr #{cache_key} #{amount}\r\n" text = socket.gets raise_on_error_response! text return nil if text == "NOT_FOUND\r\n" return text.to_i end