[thelist] Avoiding Downstream Caching from AJAX Request

Chris Marsh chris.marsh at priocept.com
Mon Feb 18 09:52:26 CST 2008


I have a page that makes regular requests to a resource on a web server
via an AJAX mechanism. A critical business requirement states that the
data obtained from this request must not be cached. ISA Server 2002 sits
between the client and IIS, and handles downstream caching. Naturally,
requests for this resource would be cached.

Am I correct in saying that including the following HTTP request header
will ensure that downstream caching is *not* performed for this


I understand from my googling that this *should* be the case, but can
anyone confirm whether this is the case in practice? Many thanks in

Chris Marsh
chris.marsh at priocept.com

Tel: +44 (0)1344 845454
Mob: +44 (0)7920 461192

Confidentiality notice: 
This email and/or any attached document(s) is confidential and intended
only for the person to which it is addressed. It may contain privileged
and/or confidential information. Any review, retransmission,
dissemination or other use of this information by persons other than the
intended recipient is prohibited.

More information about the thelist mailing list