Configuring Cache Level Event Notifications

NCache event notifications let you design applications that react to various cache events. These notifications are disabled by default to save precious CPU and network resources. Events are fired upon the addition, update, and removal of an object or when the cache is cleared. These notifications are off by default but can be turned on, for Clustered or Local Caches, as follows:

Note

This feature is also available in NCache Professional.

Cache Level Events Using the Management Center

  • Launch the NCache Management Center by browsing to http://localhost:8251 or <server-ip>:8251 on Windows and Linux.

  • In the left navigation bar, click on Clustered Caches or Local Caches, based on the cache to configure.

  • Against the cache name, click on View Details.

Important

Ensure the cache stops before proceeding.

View Details Cache Level Events Web

  • This opens up the detailed configuration page for the cache. Go to the Advanced Settings tab and click on Options in the left bar.

  • Under Notifications, check the notifications you want to receive - OnItemAdded, OnItemRemoved, OnItemUpdated.

  • Configure the Expiry Time for the events.

Cache Level Events Web

  • Click on Save Changes to apply this configuration to the cache.

Manually Editing NCache Configuration

Important

Ensure the cache stops before making any configuration changes.

  • Specify cache-level notifications through config.ncconf by specifying the <cache-notifications> tag under the <cache-settings> tag:
 <cache-settings ...>
   <logging enable-logs="True" trace-errors="True" trace-notices="False" trace-warnings="False" trace-debug="False" log-path=""/>
</cache-settings>
  • Once the changes are made, start the cache and restart the NCache service.

See Also

General Cache Settings
Cache Cluster Settings
Error Logging
Eviction Policy