MaxConnections: is it a Client or Request count?

Posted by ctacke on Server Fault See other posts from Server Fault or by ctacke
Published on 2012-11-29T03:35:52Z Indexed on 2012/11/29 5:06 UTC
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IIS allows me to set a MaxConnections value in the configuration. What is unclear (to me anyway) is what that number means exactly, and I can't find a definitive documented answer. Is this the maximum number of clients that connect simultaneously, or is the maximum number of requests that can be running concurrently?

For example, if I have a page that loads up some images, CSS files, scripts and content, each of those could reasonably be on a separate request socket with a modern browser. Is each of those sockets counted against the "max", or is it counted only as 1 since they are all requests from the same client address?

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