How to use regular expression in the metric

ex: mongodb_.*_connections{addr=“ops.URI”}
Is this achievable?

I would love to answer you but I am not a mind reader so cannot know what data source / time series database your using, that information would be help a great deal in answering your question.

oh,I’m so sorry,the database is prometheus which i use ,thanks

Think that is generally considered an anti-pattern. Brian has an example of how to do it (that he does not recommend) in the blog using __name__ . The recommended way to do this is to use labels instead.

Thank you very much ,i see