IOS 7 Background Application refresh is too expensive for developers

"TechWeb Report" iOS7 new features background application refresh allows applications to refresh data periodically in the background. Users can choose which applications to turn on the background refresh function, access to the Setup interface. However, developers can grasp the frequency of application refresh data, such as a few minutes or hours, under the appropriate settings, background refresh will not consume us too much traffic. In general, it is a feature that enhances the user experience. But for developers, the higher the application refresh rate, the higher the cost of the server they are going to spend. A developer named Smith a trend chart showing a surge in API requests and server costs after opening a high frequency background refresh in his weather applications. He chose to refresh his application data at a high frequency, resulting in a dramatic increase in the daily API request, up to 16 times times. Seeing such cost expenditure, David had to revert to the previous frequency of updates. David also suggested that other developers, in determining the use of background refresh frequency, to moderate, even without background refresh function, can be generous to the user frank. It is best to use a push update, which is more efficient when the server pushes the updated data to wake up the application.