Why is $wpdb->delete cacheable?

[barryceelen]

Noob question (and probably not directly related):

The delete method is marked as cacheable in DirectDatabaseQuerySniff.php. Why would I want to cache a DELETE query?

[JDGrimes]

Not entirely noob, there was some confusion about this back in #180 (from me 😊). The fact is though, that if you added something to the cache at some point, then you will probably want to remove it from the cache when it is deleted, to free up the cache. So that's why $wpdb->delete() is still flagged—not to add to the cache, but to delete from it.

[JDGrimes]

Maybe there is a way that we can make this more obvious though?

[barryceelen]

…which reminds me to check existing issues before opening a new one 🙈.
Thanks @JDGrimes!