Http Compression not caching static files

I'm using IIS 6.0 http compression for static files, specifically .dll
files. Using a sniffer I find the compression to be working
correctly. The dll's returned are significantly smaller and the
Content-Encoding: gzip header is returned. The only problem is the
server does not cache the dll's in compressed format after the first
request. The server has plenty of available space and both the
IIS_WPG and MACHINE\IUSER accounts have full rights to this folder.

Any ideas as how to fix this problem?

Thanks,

AJL

On Feb 19, 12:41 pm, goHawkeyes <li....TakeThisOut@boystown.org> wrote:
> I'm using IIS 6.0 http compression for static files, specifically .dll
> files.  Using a sniffer I find the compression to be working
> correctly.  The dll's returned are significantly smaller and the
> Content-Encoding: gzip header is returned.  The only problem is the
> server does not cache the dll's in compressed format after the first
> request.  The server has plenty of available space and both the
> IIS_WPG and MACHINE\IUSER accounts have full rights to this folder.
>
> Any ideas as how to fix this problem?
>
> Thanks,
>
> AJL

I beleive .DLL files are processed by the dynamic compression engine
and as such will not cache. See
http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library...S/d52ff