May I ask which tool the real-time monitoring chart in the picture is from_html/css_WEB-ITnose

Which tool does the real-time monitoring chart in the picture come from?

Reply to the discussion (solution)

It can be understood this way: when creating a database table, the user table can be created A status bar such as login status is 1, offline is 2, and invisible is 3. The query statement of the database can help you count the number of each of these three states.