Cookie restrictions in various browsers (transferred from iamued)

Cookie restrictions in various browsers (transferred from iamued)

* Note ①: including key and value, as well as semicolons and equal signs
* Note ②: the total number of bytes is also affected by the setting of the HTTP server;
Apache uses these two parameters to adjust:
Limitrequestfieldsize limits the number of bytes in the request header sent by the client. The default value is 8190]
Limitrequestline limits the number of bytes of HTTP Request lines sent by the client. [Default: 8190]
When the cookie exceeds the server's configured size, 400 bad request will appear.

Conclusion: We should ensure the number of cookie keys <= 20, single key bytes <= B, total number of bytes <= B