防止CakePHP在实例化模型时自动连接到数据库

问题描述

我公司的DBA有一个脚本，可以自动杀死长时间运行的数据库连接并查询我们的生产数据库。我编写了一个CakePHP Shell应用程序，它在循环中运行，类似于守护程序，需要定期进行数据库读取和写入。如果运行时间太长，数据库连接将被维护脚本和我的应用程序错误关闭。

查看CakePHP源代码，看起来像是当模型实例化，它会自动尝试连接到相应的数据库。

解决方案

也许你可以手动连接/断开连接当你需要吗？

DboSource有很多方法可供你使用。这里有一些可能有用的函数：

  $ db = ConnectionManager :: getDataSource（'local'）; 
 
 $ isconnected = $ db-> isConnected（）; //是连接打开？ 
 $ db-> close（）; //关闭连接
 $ db-> reconnect（）; //重新连接到db 
  
 
 
更多方法列在 
 
The DBA at my company has a script that automatically kills long-running database connections and queries on our production databases. I've written a CakePHP Shell application that runs in a loop, sort of like a daemon, that periodically needs to make database reads and writes. If it runs for too long, the database connection is closed by the maintenance script and my app errors out.

Looking at the CakePHP source, it seems like when a model is instantiated, it automatically tries to connect to the appropriate database. Is there a way to connect to the database only when making a query, then disconnect?
 解决方案 
Maybe you can manually connect/disconnect when you need to?

DboSource has lots of methods for you to play with. Here's a list of functions that may be useful:
$db = ConnectionManager::getDataSource('local');

$isconnected = $db->isConnected();  //is the connection open?
$db->close();  //close the connection
$db->reconnect();  //reconnect to the db
More methods are listed in the DboSource API docs
                        
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