Overviews for Apache cassandra

Apache Cassandra

• Column Store
• Structure
  • Clusters: Container for Keyspaces
  • Keyspace = DB in RDBMS
    • Confiure replication strategies, for example
  • Column Family = Table in RDBMS
    • Column can be added at any given time

• Architecture explanation
• Read
  • Anti-Entropy: use latest data from one node
• Write
  • Append only even for updates
    • Compaction is used not to blow disk out