The live dashboard does not update when hitting refresh.

Requirement: 

The live dashboard refresh buttons are not working and the results do not update. The current workaround involves clearing the browser cache and logging back into JasperServer. This confuses the user and takes additional time for the user.

Recommendation: 

The reason why the data is not updating is because it did not make a request to the database but instead requested it from the Ad Hoc Cache so flushing the cache would work the first time. 
The real issue here is that the dashboard has auto-refresh set to 2 mins but this didn't refresh the data from the database.

To resolve this kindly follow the below steps: 

1. Configure the ad hoc cache to flush it once a time limit has been reached:

  <cache name="adhocCache"
           timeToIdleSeconds="300"
        timeToLiveSeconds="600"

timeToIdleSeconds: how long a cache item will stay in the cache if it's not used
timeToLiveSeconds: maximum lifetime for a cache item, no matter how much it's used

Then wait after 5 minutes to see whether the dashboard reflects the newer data with its auto-refresh enabled.

2. In file  ..\WEB-INF\applicationContext-datarator.xml, set allowFlushingCacheOnPush to "true"

    <bean id="allowFlushingCacheOnPush" class="java.lang.Boolean">
        <constructor-arg value="false"/>
    </bean>

and restart the JR Server.  But the implication here is that every refresh or report execution will be retrieved from the database which can impact db performance. This is not ideal but can be used as a workaround for the time being if it works. We should at least verify whether it works regardless of whether you want to keep the changes