How do I prevent an ASP.Net site from being unloaded by IIS?
I have what may be the dumbest website in the world – once per hour it wakes up and writes a timestamp to a log file. When the app starts, it says so with a timestamp in the log, and when it dies, same thing.
In IIS I went into its Application Pool and set the Idle Timeout to 0 and set Generate Recycle Event Log Entry > Regular Time Interval to False.
Yet the site still unloads itself about once per day – I get the App Unloading… entry in the log and it sits dead until I next visit it.
How do I prevent it from unloading?
(Obviously this site will do more once I get this resolved – for now it’s as simple as possible to isolate the problem.)
The application pool has another property that causes it to be automatically recycled every N minutes (defaults to 1740, or every 29 hours.) Make this zero to disable recycling. The property is (on IIS7) under the “Recycling” heading and is called “Regular Time Interval (minutes)”