iis - Maximum concurrent calls to WCF service -

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we have wcf service hosted in iis (win 2012). expect thousands of messages coming throughout day, peak around 4k concurrent messages. these 1 way (async) requests , wcf service performs processing take several seconds each request. - there limitations on max concurrent requests can sent wcf svc hosted on iis? depend on thread availability on server? settings needs tweaking useful.

in scenario, have less number of async requests coming wcf svc, each request service performs few things parallely (parallel.foreach). maximum parallel threads available in scenario , depend on other factors? settings needs tweaking useful.


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