Cassandra Too many Tombstones encountered

I’m running Temporal server 1.16.1 with Cassandra 4.0.4
we’re getting this warning on Cassandra cluster used by temporal:

“A significant number of tombstones are being encountered during queries. A common cause of this is reading data from a partition where data is also frequently getting deleted or expired. This can have a significant impact on performance.”

Not very familiar with Cassandra DB. If someone can point me in the right direction. what could be the issue? or is there any solution?

Can you describe your use case please? Trying to understand why it seems your app is causing a large number of queries for deleted rows. Anything specific you might be doing on client side (maybe polling queries)?