Session Cookie and Persistent Cookie

         昨天，在工作中遇到了一個有關Session cookie的問題。以前沒有太注意過cookie，只知道它是用來存一些東西的，常常會產生一些垃圾檔案，常常要刪除。cookie實際上有兩種類型Session cookie和persistent cookie。
         Session cookie 又叫 transient cookie，它被儲存在臨時的儲存空間中，瀏覽器關閉後不會保留
         Persistent cookie 又叫 permenent cookie，它被儲存在使用者的硬體上，直到到期或這是使用者自行刪除

Yesterday, a question about session cookie in my job. I did not pay attention on cookie, and just knew that cookie is used to store something and always create something as rubbish of OS. After finished the job I learn about the types of the cookie. There are two types of cookie: session cookie and persistent cookie.

Session cookie also called a transient cookie, it is stored in temporary memory and is not retained after the browser is closed.

Persistent cookie also called a permenent cookie, it is stored on user's hard drive until it expires or be deleted by the user.