Stop Website (not IIS) gracefully

Hi All,

To give a bigger picture, We have more than 40 servers hosting multiple sites/services on IIS 7.5 behind Load Balancer (Nginx).

When we deploy new code we see quite a few request which are already on the backend are failing during code deployment.

I was wondering is there any way to stop a website (not IIS ) garcefully. So to make sure that requests which are already on the server will be completed.

Any help / suggestion will be appreciated.

Thanks in advance.

Manan