length of etag
length of etag  etag header in http - Does the HTTP protocol specify a max length for the ETag?   No, HTTP protocol do not specify a max length for the ETag 

Support for ETag
In this section, you will learn about how to use ETag in Spring MVC 

Ajax.NET Professional
and on the server, faster JavaScript wrapper files cached using HTTP ETag header... not have any 'Ajax-enabled' controls or support for Viewstate, etc..., structs or enum types Include JavaScript DataTable, DataSet, support 

Downloading and Viewing html source of a page i.e. running on the server
Last-Modified: Sun, 21 Nov 2004 14:35:22 GMT ETag: "13745-5d6-a659be80