Removing indexes after DEL a key?

[stpp2]

Hi there,

I'm using go-redis with KVRocks.
Not sure if this is default behavior with the client or with KVRocks, but it always saves indexes alongside the regular keys. For example, whenever I save something like foo:bar it gets saved in the DB twice:

1. foo:bar
2. IDX_foo:bar

I'm wondering what's the best practice dealing with those IDX_ entries in the DB after deleting the original key (foo:bar) ?
Normally I'd only delete keys via SCAN and a pattern like foo:* so the IDX_foo:bar key/index is still saved forever.

Would be nice to be able to delete both in one go rather than sending multiple commands.

Thanks!