4 月
8
2005

使用cookie的限制

我之前寫一個程式,裡面使用了cookie去紀錄一些東西

今天使用者反應,超過20個項目之後的東西沒有辦法顯示

剛剛去查了一下,原來cookie有使用上的限制

There are limitations on the number of cookies that a client can store at any one time.

This is a specification of the minimum number of cookies that a client should be prepared to receive and store.

300 total cookies

4 kilobytes per cookie, where the name and the OPAQUE_STRING combine to form the 4 kilobyte limit.

20 cookies per server or domain. (note that completely specified hosts and domains are treated as separate entities and have a 20 cookie limitation for each, not combined)

Servers should not expect clients to be able to exceed these limits.

When the 300 cookie limit or the 20 cookie per server limit is exceeded,

clients should delete the least recently used cookie.

When a cookie larger than 4 kilobytes is encountered the cookie should be trimmed to fit,

but the name should remain intact as long as it is less than 4 kilobytes.

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