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Explain Tombstone in Cassandra?
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Answer / Sushma Sagar
A Tombstone in Apache Cassandra is a placeholder that represents deleted data. When a row (or column) is deleted, its corresponding tombstone is inserted into the SSTable. The tombstone allows the system to know that the data should not be returned during read operations, and it eventually expires or cascades down to other replicas, removing the deleted data from all replicas.
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