Adjust the Pinger Interval
On a regular basis, the CMS application in the browser performs a callback to the server to keep the authorized session in the browser alive. As a side effect, changes made by other users will also be returned upon the callback. This periodic task is known as the Pinger.
By default, the pinger callback is fired every 20 seconds.
This can be changed through the String property pinger.interval in the configuration of /hippo:configuration/hippo:frontend/cms/cms-static/root. For example, to fire the pinger every one and a half minute, set the property to "90 seconds". A pinger interval of "0 seconds" disables the pinger.