Re: [squid-users] no-cache and origin servers

On 14/07/11 22:21, Mohsen Pahlevanzadeh wrote:
> Dear all,
>
> Suppose i have an origin server and squid, my origin server fill cache
> header and send squid-box, now if put no-cache squid does cache my page?

Yes the page may be stored. no-cache from the origin is the same meaning
as must-revalidate (ie must check for updates before re-using).
  The proper use of no-cache is to set a list of headers that are to be
removed when storing the object.

Example:
  HTTP/1.1 200 OK
  Date: ...
  Cache-Control: no-cache="Foo"
  Set-Cookie: ...
  Foo: ...

stored object:
  HTTP/1.1 200 OK
  Date: ...
  Cache-Control: no-cache="Set-Cookie"
  Set-Cookie: ...

> It's very important that squid doesn't response.How do i implement it?

http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.2

To prevent storing the object origin sends:
  Cache-Control: no-store

Amos

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