Backup and Recovery Mechanisms of Cassandra Database: A Review

Cassandra is a NoSQL database having a peer-to-peer, ring-type architecture. Cassandra offers fault-tolerance, data replication for higher availability as well as ensures no single point of failure. Given that Cassandra is a NoSQL database, it is evident that it lacks research that has gone into comparatively older and more widely and broadly used SQL databases. Cassandra’s growing popularity in recent times gives rise to the need to address any security-related or recovery-related concerns associated with its usage. This review paper discusses Cassandra’s existing deletion mechanism and presents some identified issues related to backup and recovery in the Cassandra database. Further, failure detection and handling of failures such as node failure or data center failure have been explored in the paper. In addition, several possible solutions to address backup and recovery, including recovery in case of disasters, have been reviewed.