Ok so the title is pretty self explanatory. There's thousands of rows in the session table. I see that the Persistent Login module is enabled. I don't know if this affects how the sessions are stored. Also, I note that 100+ users are quoted as being visitors at any one time, which seems very excessive for the user base and niche content of this site.
Please can someone advise the best course of action here? I assume I can truncate this table locally, but what's the long term action plan look like?