We are developing a calender web application. We need to show notifications and alerts for calender events. For that purpose we want to run a background service for managing notifications. 

We found a background-support option where the application execution is not suspended when the application is sent to the background. In this case the whole application will be running in background but we want to run only the notification service in the background which cosumes less memory/resource.

<tizen:setting background-support="enable" />

https://developer.tizen.org/help/index.jsp?topic=%2Forg.tizen.web.appprogramming%2Fhtml%2Fapp_dev_process%2Fediting_tizen.htm

Please let us know if there is any background service feature in Web Application.