关于ASP.NET应用程序中缓存的最佳实践

I have a question regarding Caching. I have a typical n-tier ASP.NET web app. I have made a custom Cache wrapper (wrapping ASP.NET Cache object), and I would like to know the best practices of Caching data. I don't want to use caching in my business layer (don't want to add any reference to System.Web dll there). Same case with DAL. So the only options left are:I have a question regarding Caching. I have a t