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I’d like to host a WCF web service in IIS. The service should keep a certain set of data all the time, it must never be lost.
My colleague told me this is impossible because IIS closes down the service after a certain time (I assume without any activity). Is that true? How do I prevent that behavior?
In case it matters, both IIS 6 and 7 are available.
By default, IIS recycles the worker process after a certain period of inactivity (20 mins if I recall correct). This causes your data to be lost.
You can turn off this behavior in the Properties page of the ApplicationPool under which your app is running.
EDIT: having said that, if it is really important that this data is never lost, I would consider storing it in a database or some other form of storage.