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We are currently thinking of building a cache-system to hold data pulled out of an SQL database and make it available to a couple of other applications (website, webservice, etc). We imagine the cache to be running as a windows service and basically consist of a smart dictionary which holds the cache entries. My question is, is there a limit to the working set of the application (it will be running under windows server 2003)? Or is the amount of physical memory the limit?
32bit or 64bit? 32bit is 2gb (for a process), 64 bit is 1TB (enterprise edition 2003 server).
However, the maximum size of a CLR Object is 2gb even on 64bit.
Update: the information above was correct in 2008. See Ohad’s answer for more recent information. Windows 2016 server can have a maximum of 24TB.