# File lib/moneta/adapters/memcached/native.rb, line 60
      def increment(key, amount = 1, options = {})
        result = if amount >= 0
          @backend.increment(key, amount)
        else
          @backend.decrement(key, -amount)
        end
        # HACK: Throw error if applied to invalid value
        # see https://github.com/evan/memcached/issues/110
        Utils.to_int((@backend.get(key, false) rescue nil)) if result == 0
        result
      rescue ::Memcached::NotFound => ex
        retry unless create(key, amount.to_s, options)
        amount
      end