HttpExpires Metabase Property (IIS 6.0)
The HttpExpires property specifies the expiration of HTML document content by returning the value to the browser in the HTML file header. The browser compares the given value with the current date to determine whether to display a cached page or to request an updated page from the server. This property can be made relative, or dynamic, by using the format D, #SecondsUntilExpiration, with 0xFFFFFFFF indicating no expiration date. It can also be absolute, with the format S,ValidGMTstring.
You can configure this property at the following locations in the IIS metabase.
For general code examples, see Code Examples to Configure Metabase Properties.