Errors during recycling ASP.NET worker processes

[aindrei]

I have a Web Service application using ASP.NET.

If I set the application pool threads to recycle the worker processes
after a small number of requests.
I then use the Web Stress tool to send requests to the server and
after a while I check if there were any errors. It seems that during
the recycle the requests are failing.

Is there anything I can do to be able to recycle the worker processes
without having any downtime?

Thanks!