允许的最大Cookie数 [英] Maximum number of cookies allowed

问题描述

Google搜索告诉我，最大允许的Cookie数量取决于浏览器，但是我无法找到任何有关在现代浏览器上允许多少Cookie的数据。

As far as Google searches tell me, the maximum allowed number of cookies depends very much on the browser, however I cannot find any recent data as to how much cookies are allowed on modern browsers.

我需要在Cookie中存储一些大量的用户偏好（对于尚未注册的用户），那么最好的办法是什么呢？ （另外，这些Cookie将通过javascript客户端和php服务器端访问）

I need to store a somewhat large number of user preferences in cookies (for not-yet-registered users), so what would be the best way of doing that? (Also, those cookies would be accessed both via javascript client-side and php server-side)

推荐答案

从 rfc ：

• 至少300个Cookie

• at least 300 cookies

每个Cookie至少有4096个字节（由组成
字符的大小衡量） cookie非终端的语法
Set-Cookie头的描述）

at least 4096 bytes per cookie (as measured by the size of the characters that comprise the cookie non-terminal in the syntax description of the Set-Cookie header)

每个唯一主机或域名至少20个Cookie

at least 20 cookies per unique host or domain name

这些是最低要求。 IE6团队没有得到。一切都是高度浏览器特定的。你最好写一个测试平台来测试每个浏览器。

Those are minimum requirements. The IE6 team didn't get that. Everything else is highly browser-specific. You'd better write a test-platform to test each browser. Test the maximum size and number with little incremental steps (and check if they still are readable).

此外，我似乎记得apache有一个问题与huges数量的cookie 。

Also, I seem to remember apache has a problem with huges numbers of cookies. Can't remember where i've seen that though.

这里是一个小小的测试脚本：
http://krijnhoetmer.nl/stuff/javascript/maximum-cookies/

Here is a little cookie-testing script: http://krijnhoetmer.nl/stuff/javascript/maximum-cookies/

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