How to get liferay login concurrent user's log to find how many users online at a time?
How to maintain user's activity log?
Thanks in advance.
You can just see live users. If portlets are custom you can put log in your code for seeing activities, but if you want liferay's portlets activities, it will need lot of changes in code. For seeing user, first of all add the following in portal-ext.properties. It is set false in portal-properties.
live.users.enabled=true
Now you can see users who are currently live on server in Control Panel's Monitoring menu.