SPM 7 – Tech Support Training Dashboards - How often are they updated? July, 2013
Dashboards - Updates
What does Last Updated mean? It’s the last date/time that the gadget’s data was retrieved from the data providers Each time a gadget is displayed, either during a slideshow or when a user selects the dashboard that contains the gadget, the data on the gadget will be displayed from the cache until the data has ‘expired’ Data expiration occurs when the current date/time is > ‘Last Updated’ date/time + refresh interval Refresh interval is based on whatever ‘Viewing Period’ has been chosen for the gadget.
What determines the refresh interval? Based on gadget Viewing Period Stored in Time.Aggregation table in ApplicationModules db Viewing Period Refresh Rates: Viewing Period Refresh Rate Hourly Every 15 minutes Daily Every hour Weekly Every 6 hours Monthly Yearly Every 24 hours
More on Refresh Interval In the Time.Aggregation table in the ApplicationModules database – they can be edited:
An example A gadget has a viewing period of ‘Last 2 Weeks’ This is a weekly viewing period – will be updated every six hours If gadget is displayed on screen at 7/11/2013 11:15 AM, the data will not be refreshed and ‘Last Updated’ time will show 7/11/2013 5:29 AM If gadget remains on screen, shortly after 11:29:01 AM on 7/11/2013 the refresh indicator will display on bottom left of gadget Request will be made to the data providers When data is returned, gadget will be updated with new data Last Updated time will be changed to the date/time that the data was received from the provider. If gadget is displayed on screen at 7/11/2013 11:45 AM cached data will be displayed so user has something to look at. Since 24 hours have passed, refresh indicator will be displayed and a request will be made to the data providers for new data
Additional Information Gadget data will not get updated again unless the gadget is displayed on screen’ If the dashboard containing our example gadget is not viewed for a month When it is finally viewed, the ‘Last Updated’ date will be ‘7/10/2013 11:20 AM’ with the associated data from that date/time Seconds later the refreshed data will be returned by the data providers Refresh rate of gadget data is not tied to the logging interval If new logged values have been recorded since the last gadget update, they will be included when the data is refreshed Logging rate does not affect how often gadgets are updated Data expiration was implemented to avoid overwhelming data providers with too many requests for data. Given this implementation, the gadgets on a dashboard will have different refresh intervals
Scaling Scaling is done automatically by the graphing tool based on the min/max values of plotted data. It could change as new data comes in