Regarding the answer provided by @ BryceAtNetwork23, this will be the same with Cassandra 2.1 or in Cassandra 2.2 (but Cassandra 3.0 is likely to be a different story since the team is currently rewriting the storage engine, see CASSANDRA-8099 ). Saved data is saved in binary format.
. , , , , ..
, cassandra.
, long Java, 8 , cassandra bigint , , . , , , - .
, , String Java, UTF-16 , Cassandra text UTF-8 . UTF-16 2 4 , UTF-8 1, 2, 3 4 .
, /. , 158786464563, 12 . , -.
. cassandra ascii, US-ASCII 1 .
UUID ( 128 ), Java UUID 2 long, 16 , Cassandra 16 ( Java UUID).
, , , . :
- , , ,
[−9,223,372,036,854,775,808 ; +9,223,372,036,854,775,807], bigint - UUID
- (, 100 . ), ,
text , , text .
- blob, .. , , , . , - . , , , , , ..