CODEWITHSUNDEEP
database-designcassandranosqlcassandra-2.0nosql-aggregation
agrawal1084
agrawal1084

Reputation: 139

Is Cassandra in memory i.e. 100% data is cache?

In cassandra sstables are stored on disk and memtable are in cache so is there is 100% conversion from sstable to memtable i.e. if 10 GB of sstable is there then will it required 10 GB of ram ?

Upvotes: 0

Views: 420

Answers (1)

Laxmikant
Laxmikant

Reputation: 1621

No that is not true. For better understanding check memtable related cassandra configuration, for example : memtable_heap_space_in_mb – This is the total allocated space for allmemtables on an Apache Cassandranode. By default, this is one-fourth your heap size. 

Also read about write and read path of cassandra.

Upvotes: 1

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