ApplicationPool requires recyling spontaneously

Mathew Grabau (RR) 1 Reputation point

Product: IIS 8.5

We are experiencing an occasional condition where an application is getting 500 responses to an endpoint (both hosted on the same server, using separate application pools). From what I can tell, our application is not seeing the majority of requests (they are being instantly returned

When we recycle the application pool for the application (not the API), the problem seems to be fine. It's isolated to the application's application pool.

The API is ASP.NET and the application is a SPA (again, both hosted on the same server).

Are there any suggestions, debugging techniques or other information that might be relevant to isolating the problem?

Internet Information Services
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