What is tombstone in Cassandra?

Related questions

1. Can Cassandra store JSON?
2. Why are columnar databases faster?
3. What is Cassandra database good for?
4. Why Cassandra is column based?
5. How is Cassandra NoSQL?
6. Does Cassandra use consistent hashing?
7. What is TTL in Cassandra?
8. How does Cassandra DB work?
9. How does MongoDB replication work?
10. Is Cassandra key value?

Tags

1. #matter
2. #value
3. #cassandra
4. #correct
5. #nothing
6. #standard
7. #algorithm
8. #shards
9. #choose
10. #delete
11. #insert
12. #reads
13. #tombstone
14. #requested
15. #sstables
16. #applies
17. #merge
18. #memtable
19. #write