First, My name is Dani and I work as Java developer in Spain,
I need advice to implement a functionality I want to include into my application.
The application is a store where sellers can insert offers and I want clients to be notified by some way about the new offers. The favorite way is through popups. When the seller inserts the offer, all the clients who are online in the store receive a popup window to notify. Another choice could be by using Struts Cron, and read the new offers every minute (period is not important, I can read them for each 10 minutes) and open the popup to show all the offers together.
Any help is useful, and any other idea about the way to develop the functionality will be accepted.