This documentation supports the 22.1 version of Action Request System.
To view an earlier version, select the version from the Product version menu.

Synchronizing mid tier cache

To enable faster previewing of changes to forms and applications in a browser and for users to see updated information more quickly, as an administrator, update the arsystem.arservers.onbmc-s.perform_sync parameter from Centralized Configuration.

For more information, see Configuration settings A-B.

(For on-premises deployments only) Synchronizing Mid Tier cache by using the Sync Cache option

Use the Sync Cache option for the available servers to sync data between the servers and Mid Tier . Selecting this option for a server clears only those objects that have changed on that server since the last time the cache was cleared.



The Sync Cache operation synchronizes any of the following objects, if the changed timestamp on  AR System server is more recent than the cached item in the  Mid Tier cache:

  • Forms
  • Active links
  • Containers (guides, applications, web services)
  • Menus (character menus)

Sync Cache completely removes and rebuilds the following cache items since the performance hit is minimal:

  • Group data
  • Role data
  • Image objects
  • Currency codes

Whenever AR System server successfully applies a deployment package, the Mid Tier receives a notification and can sync the cache automatically.

The Sync in Cluster option indicates whether you want the cache to be synced automatically on a group of Mid Tier s. This option allows you to see the changes from Sync Cache from any mid tier in the group without clearing browser cache.  

If the Sync in Cluster check box is:

  • Selected—The cache will be synced periodically and simultaneously across all Mid Tier s in a group. It does not require the Mid Tier s to be in a clustered deployment. All the Mid Tier s run the timed Sync Cache at the same time if the following conditions are true:
    • The Mid Tier s in the group should have the same interval definition specified from the Definition Change Check Interval field of the AR Server Settings > Edit AR Server Settings page.
    • The mid tiers should be running on computers with the same system clock time.

      The Mid Tier s in a group do not communicate with each other internally. All Mid Tier s that have same system clock time and Definition Change Check Interval value are defined as a group of mid tiers.

  • Cleared (default)—The cache will be synced automatically at the interval that you specify on each Mid Tier  in the Definition Change Check Interval field of the AR Server Settings > Edit AR Server Settings page.

For more information about this option, see Knowledge Base article ID  000226959 Open link . (You must be logged in to the BMC Support site to access this article.)

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