cakephp 中Console / Shell 有什么优点?

Which is the advantage of using CakePHP Console / Shell for programmed tasks ?

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最近用到了cakephp中的shell,但是不知道为什么要用shell,所以到google了一下，找到了一份比较满意的答案，在这里记录下。

Here are a few reasons that come to mind:

• A shell isn't publicly accessible, where a url (generally) is
• A shell doesn't hit your webserver
• The shell dispatch process has less overhead
• Shell output is easier to log error vs. output

另： Some disadvantages of a web script I can think of are:

• the execution time is limited by the webserver
• the memory it can consume is limited by the webserver
• the script URL has to be protected in order to get executed only when YOU want
• obviously the webserver has to be up and running when you want to call your script