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Time Series db using cassandra https://docs.datastax.com/en/tutorials/Time_Series.pdf Try it out https://www.datastax.com/try-it-out   cqlsh:demo> create TABLE demo.users3(lastname text, firstname text, time timestamp , primary key(lastname, time)); cqlsh:demo> INSERT INTO users2(lastname, firstname , time ) VALUES ( ‘test1’, ‘testfir’, 164447) USING TTL 20; cqlsh:demo> select firstname FROM demo.users2;   Data Modeling However, in Cassandra, the data access queries • Read More »