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Chapter 35. Cookies > Best Practices for Using Cookies

Best Practices for Using Cookies

Different browsers impose different limitations on cookies. Always keep these standard restrictions according to RFC 2109 (“HTTP State Management Mechanism”, http://www.ietf.org/rfc/rfc2109.txt) in mind:

  • 300 total cookies

  • 4KB per cookie, for the sum of both the cookie's name and value.

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

  • Users can turn cookies off or disallow them on a case-by-case basis.


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