Why SharePoint site's first load is very slow

The sharepoint site is very slow when we access it first time. After that the response time is good. The reason is compilation and caching which takes time after application pool is recycle. To handle this we need to warm up the server whenever recycle happens. Here is a good link that explains about server warm up: http://blogs.msdn.com/b/joelo/archive/2006/08/13/697044.aspx 


So the idea is to schedule a job that pings the server whenever reset occurs.