is there any way, how to get the usage statistics behind the Jira Dashboards?
For Example, how many people has opened this dashboard?
It is possible to read it out from some logs?
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Jira does not record this itself. If you have a proxy server in front of it though, or you are willing to fiddle with the Tomcat access logging setup, you can record some basic detail about who lands on a dashboard, and read it out of them.