Etag Implementation for Web Api - Caching

WHAT IS ETAG ?

Below the details to use the ETag feature from API - Backend Implementation.

Example :- 

1) Request 1 Login and request a getSomethingService  call . you

    will recieve an Etag with value in the response header .

2) Copy the response header for the next request

3) Request 2 add "If-None-Match" request header attribute to service

    request and put the saved value from request 1

                

4) if the response is same , you would get a 304 not

    modified response code.