How to Modify the caching values if your data does not update constantly

Modify the caching values if your data does not update constantly

In the applicationContext-adhoc.xml Spring configuration file, there are two parameters for when to clear the cache.

The defaultTimeoutMinutes and defaultUnusedTimeoutMinutes properties, both in the dataSetCache bean, can be modified:

The number of minutes to wait before removing a dataset from the cache. Ensures that stale data is periodically replaced with fresh data from the data source. The default is 60 minutes.

• defaultTimeoutMinutes: The number of minutes to wait before removing a dataset from the cache. Ensures that stale data is periodically replaced with fresh data from the data source. The default is 60 minutes. So if the value is set to something below 60, then it might be worthwhile testing it by setting it to the maximum value.

• defaultUnusedTimeoutMinutes: The number of minutes to wait after a dataset is used before removing it from the cache. The default is 20 minutes. You might try setting this value to a higher value (something higher than the default 20).

For more on these parameters, and Managing Ad Hoc Caching in general, refer to the JasperReports Server Admin Guide.

Other Performance Tips:

• Measure and Test
  • Test DB Queries with DBTester
  • Do Performance Testing with JMeter
  • Measure Ad Hoc Performance
• Ad Hoc
  • Set query limits on the "Ad Hoc Options" page
• Tomcat
  • Compress HTTP responses at the Tomcat level
  • Increase the maximum thread count at the Tomcat level
  • Set up a cache filter for Tomcat or JBoss
  • Disable automatic deployment on production servers using Tomcat
• Database
  • Index columns in the database to speed up domain-based reports
  • Set the fetch size in the jasperreports.properties file to modify the number of rows to fetch
• JasperReports Configuration Items
  • Modify Virtualizer Settings for Very Large Reports
  • Modify the jasperreports.properties file to disable multi-line data processing

• Back to JasperReports Server Performance Tips and Tricks