Refreshing the execution server list
The execution server list is refreshed automatically at regular intervals of time.
Talend Administration Center reads the servers' status from the cache every five seconds. Cache updates every 90 seconds.
You can change the refresh interval value by supplying the parameter notification.conf.checking.frequencyCheckJobServerState (value in seconds) in the file <tac_installation_folder>/apache-tomcat/webapps/org.talend.administrator/WEB-INF/classes/configuration.properties.