timcof
Mon Nov 10 04:16:00 CST 2003
Affinity set on your load balancer should handle this, I would think. If set properly, this ensures that the same client always gets back to the same server in
the farm.
Thank you. I hope this information is helpful.
Tim Coffey [MSFT]
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| From: paul.sullivan@avotus.com (Paul Emory Sullivan)
| Newsgroups: microsoft.public.inetserver.iis
| Subject: Can requests for page parts be coerced to the same server
| Date: 20 Oct 2003 17:55:05 -0700
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| I anticipate a problem that may occur when we deploy our reports on
| web farms. We have reports that generate both tabular and graphic
| output in a single Recordset pass. Each report page request writes a
| temporary graph GIF. Subsequently, another request for the GIF is
| issued due to an IMG tag on the report page: <IMG
| SRC="IMG.asp?graph123.gif"> IMG.asp responds with the GIF that was
| generated by the report page request. The problem I anticipate is that
| requests for GIF files may be directed to different servers on the web
| farm than the server on which the GIF is written, resulting in a "File
| not found" error from IMG.asp. It could be solved by having IMG.asp
| generate the GIF by reissuing the query but this would double SQL
| Server's workload. Using a network drive to store the GIF could also
| solve it but this is not an option because network share access will
| be disabled on the web farm for security reasons.
|
| Is this a problem? Does it depend on the type of web farm and/or web
| farm configuration? Is there a work around that can coerce requests
| for the graph GIFs back to the same server?
|
| Thanks in for any insights,
| Paul Sullivan
|