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Version: 3.4 (unsupported)
    Features and pricing

    Getting Started with ScalarDB on Cassandra

    Overview​

    This document briefly explains how you can get started with ScalarDB on Cassandra with a simple electronic money application.

    Install prerequisites​

    ScalarDB is written in Java and uses Cassandra as an underlying storage implementation, so the following software is required to run it.

    • Oracle JDK 8 (OpenJDK 8) or higher
    • Casssandra 3.11.x (the current stable version as of writing)
      • Take a look at this document for how to set up Cassandra.
      • Change commitlog_sync from periodic to batch in cassandra.yaml not to lose data when quorum of replica nodes go down
    • Other libraries used from the above are automatically installed through gradle

    From here, we assume Oracle JDK 8 and Cassandra 3.11.x are properly installed in your local environment, and Cassandra is running in your localhost.

    Configure ScalarDB​

    The scalardb.properties (getting-started/scalardb.properties) file holds the configuration for ScalarDB. Basically, it describes the Cassandra installation that will be used.

    # Comma separated contact points
    scalar.db.contact_points=localhost

    # Port number for all the contact points. Default port number for each database is used if empty.
    scalar.db.contact_port=9042

    # Credential information to access the database
    scalar.db.username=cassandra
    scalar.db.password=cassandra

    # Storage implementation. Either cassandra or cosmos or dynamo or jdbc can be set. Default storage is cassandra.
    #scalar.db.storage=cassandra

    Please follow Getting Started with ScalarDB to run the application.