Trigger on TTL deletion Cassandra

Multi tool use
Multi tool use


Trigger on TTL deletion Cassandra



I'm currently building an application in Java that uses a Cassandra database, and I would like to have a table that takes in data as it expires in another Cassandra table. Is there a way to implement a Trigger that can do this?




1 Answer
1



The data doesnt actually expire on a timer or anything. The data is written to disk with the ttl. When read if the ttl + writetime > now it will consider it a tombstone instead of the data. Then after gc_grace_seconds it will end up being purged on a compaction. So while the data is expired, it maybe days depending on compaction strategy before its actually deleted from disk.


ttl + writetime > now


gc_grace_seconds



To answer question though, no you cannot.






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