Built-in crontab tasks

Task	Default time	Execution	Description
Dashboard Activity Purge	@daily	At 00:00.	Clean older than one month dashboard activity log.
User Items Serialize	@hourly	Each hour.
Refresh User Items	@weekly	Each sunday.	Refresh the total repository size assigned to a single user. Each user is owner of some repository size.
User Mail Importer	*/30 * * * *	Each 30 minutes.	Import mails from registered user mail accounts.
Text Extractor Worker	*/5 * * * *	Each 5 minutes.	Process text extraction queue. For more information Statistics.
Antivirus Checker Worker	*/5 * * * *	Each 5 minutes.	Process antivirus  check queue. For more information Statistics.
Session Watchdog	*/5 * * * *	Each 5 minutes.	Kill orphan sessions.
Process Pending Tasks	*/5 * * * *	Each 5 minutes.	Execute pending task. For more information Statistics.
Optimize Lucene Indexes	@daily	At 00:00.	Optimize the Lucene indexes.
Send Grouped Notifications	@daily	At 00:00.	Send daily mail notification grouped on single mail. For more information Profile Notification tab.
Purge Old Trash Nodes	@daily	At 00:00.	Purge old nodes in the trash.