Dashboard widgets showing QoH should now be using inventory snapshot data

[jmiranda]

The current dashboard widgets calculate (and cache) the QoH values for all products at the given location on the fly (i.e. on the first request for the dashboard). Subsequent requests use the cached data. However, the initial request takes about 45 - 60 seconds and is unnecessary since we should now have that data stored in the inventory snapshot table.

[jmiranda]

The old dashboard contained data that was stale for about 12 - 24 hours. An admin user could flush the dashboard cache which refresh this data, but this seems to be used infrequently. Now the data should only be stale for about an hour as the dashboard data is now pulled from the inventory_snapshot table which is refreshed every hour.

# Every hour on the hour
openboxes.jobs.calculateQuantityJob.cronExpression = 0 0 * * * ?

You can change the refresh interval by changing the cron expression for the calculate quantity job in openboxes-config.properties. Anything less than 5 minutes might impact performance so I would recommend setting the cron expression to run every 5, 10, or 15 minutes.

# Every 15 minutes
openboxes.jobs.calculateQuantityJob.cronExpression = 0 0/15 * * * ?