Programming Microsoft® ASP.NET 3.5

Caching ASP.NET Pages

There are many situations where it is acceptable for a page response to be a little stale if this brings significant performance advantages. Want an example? Think of an e-commerce application and its set of pages for the products catalog. These pages are relatively expensive to create because they could require one or more database calls and likely some form of data join. All things considered, a page like this could easily cost you a few million CPU cycles. Why should you regenerate this same page a hundred times per second? Product pages tend to remain the same for weeks and are rarely updated more than once per day. Whatever the refresh rate is for the pages, there's little value in regenerating them on a per-request ...