instance method keepalive

# File activerecord/lib/active_record/database_configurations/hash_config.rb, line 125
      def keepalive
        case keepalive = configuration_hash[:keepalive]
        when false
          nil
        when nil, true
          600.0 # default
        else
          keepalive = keepalive.to_f
          keepalive if keepalive > 0.0
        end
      end