Re: IIS caching output of pages

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From: Steven Cheng[MSFT] (v-schang_at_online.microsoft.com)
Date: 03/02/04


Date: Tue, 02 Mar 2004 07:37:12 GMT

Hi Nick,

After further research, I found that there seems an issue on IIS6's
caching, here is the detailed description on it:

----------------------------------------------------------------
In Microsoft Internet Information Services 6.0, if your Web site is
configured for both an IP address and host headers, any change that you
make to the static content does not appear immediately.

CAUSE
=====

This problem occurs because of the way that the content is stored in the
Http.sys cache.

RESOLUTION
==========

Hotfix information
------------------
A supported hotfix is now available from Microsoft, but it is only intended
to correct the problem that is described in this article. Only apply it to
systems that are experiencing this specific problem. This hotfix may
receive additional testing. Therefore, if you are not severely affected by
this problem, Microsoft recommends that you wait for the next Windows
Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support
Services to obtain the hotfix. For a complete list of Microsoft Product
Support Services phone numbers and information about support costs, visit
the following Microsoft Web site:

        http://support.microsoft.com/default.aspx?scid=fh;[LN];CNTACTMS:
        http://support.microsoft.com/default.aspx?scid=fh;[LN];CNTACTMS

Note In special cases, charges that are ordinarily incurred for support
calls may be canceled if a Microsoft Support Professional determines that a
specific update will resolve your problem. The usual support costs will
apply to additional support questions and issues that do not qualify for
the specific update in question.

Restart requirement

You must restart your computer after you apply this hotfix

File information
 The English version of this hotfix has the file attributes (or later) that
are listed in the following table. The dates and times for these files are
listed in coordinated universal time (UTC). When you view the file
information, it is converted to local time. To find the difference between
UTC and local time, use the "Time Zone" tab in the Date and Time tool in
Control Panel.

   Date Time Version Size File name
           ------------------------------------------------------
           10-Dec-2003 00:37 5.2.3790.110 334,336 Http.sys
           10-Dec-2003 01:18 5.2.3790.110 27,648 Httpapi.dll
           10-Dec-2003 01:18 6.0.3790.110 338,432 W3core.dll

Note If you are also experiencing the symptoms that Microsoft Knowledge
Base article 832911 describes, apply this hotfix before you apply hotfix
832911.

--------------------------------------------------------

However, this issue is still in testing. Not sure whether your problem due
to it.

In addtion, you should also verify whether or not this is a kernel mode
caching issue you're dealing with by temporarily disabling the kernel mode
cache (UriEnableCache=0, etc.). For details on this, refer to
http://support.microsoft.com/?id=820129.

Please check out the above items. Hope they are helpful.

Regards,

Steven Cheng
Microsoft Online Support

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