Skip to main content
Version: 3.4 (unsupported)

Getting Started with Scalar DB on Cassandra


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

Install prerequisites

Scalar DB 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 Scalar DB

The (getting-started/ file holds the configuration for Scalar DB. Basically, it describes the Cassandra installation that will be used.

# Comma separated contact points

# Port number for all the contact points. Default port number for each database is used if empty.

# Credential information to access the database

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

Please follow Getting Started with Scalar DB to run the application.