James M Snell wrote:
One approach that I've taken in our server implementation is to use Last-Modified / If-Modified-Since HTTP headers to provide a kind of sync'ing mechanism. Specifically, when a client requests the APP feed using a If-Modified-Since header, the server will return ONLY those entries that have been modified since the specified date. If no entries have been modified, the client will receive the expected 304 Not Modified status response.
And you also set the response "Vary" header to indicate that the response varies with the "If-Modified-Since" request header, right?
Best regards, Julian
