rsclmumbai
It’s not cache it’s an actual permanent table holding most searchable data. You can delete rows but you’ll likely remove data that needs to be there for search. What you can do is truncate the table, set reindex = 1 in the config table, and run cron a bunch of times to repopulate the table. You need to run cron manually until reindex is set back to 0 automatically.
Cheers.