There is a chrome extension. I want to show a notification to user. The data for notification store on remote server. In order to it does not to update extension every time.
For example, the data will store in public Github repository. How to know that the new data appeared? Except calls the request every N minutes.
Github Hooks require static url. There is not url in case with browser extension.
Is there other way to know about new data? Maybe RSS? The key requirement is free to use.