django对每次request都发起一个connect。传说中django 1.6之前每次连接完了就关闭了， 到了django 1.6，终于有个CONN_MAX_AGE来指定连接存活时间。
但这有屁有啊!它还是每次request都发起连接请求。
在数据库里光看到连接数增长了，却不见django复用之前的连接……

按理不就如此，是不？那难道是我跟踪错了？

    def connect(self):
        """Connects to the database. Assumes that the connection is closed."""
        # In case the previous connection was closed while in an atomic block
        self.in_atomic_block = False
        self.savepoint_ids = []
        # Reset parameters defining when to close the connection
        max_age = self.settings_dict['CONN_MAX_AGE']

        print "wuhaochi", "connect to database", __file__

        self.close_at = None if max_age is None else time.time() + max_age
        self.errors_occurred = False
        # Establish the connection
        conn_params = self.get_connection_params()
        self.connection = self.get_new_connection(conn_params)
        self.init_connection_state()
        if self.settings_dict['AUTOCOMMIT']:
            self.set_autocommit(True)
        connection_created.send(sender=self.__class__, connection=self)



    def get_new_connection(self, conn_params):
        return Database.connect(**conn_params)

最后的Database，即我绑定的postgresql adapter，到这一步，是肯定连过去了。

而self.connection 则在 读取 self.get_new_connection(conn_param)前根本没有判断。
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FROM 116.247.85.*