best way to update client site data in GWT application

Question

When getting data from the server to the client side in GWT application we need to refresh every period of time to get updates for data, I think this is not a good method because if consume lot of time and resources, just thinking about another method is amazing :), any one get a good and effeciant idea ??

Answer 1

You should take a look at server push technologies, like Comet for GWT

Answer 2

I think you should definitely have a look at JBoss Errai (http://www.jboss.org/errai) - very cool and promising thing. Will be even shown off at Google IO this year.