Cassandra UI

A Docker-packaged Cassandra browser with a React 19 + TypeScript frontend and a Java 21 Spring Boot backend.

Features

• Connect to Cassandra with host, port, datacenter, optional username/password, and optional keyspace.
• Browse keyspaces and tables.
• Create and drop keyspaces.
• Inspect table schema and generated CQL.
• Browse table data with page controls.
• Execute single-statement Cassandra CQL from the Query tab.

Run With Docker

docker compose up --build

Open the frontend at:

http://localhost:3000

Backend API is exposed at:

http://localhost:8080

Cassandra Connection Values

Docker Compose starts only the Cassandra UI frontend and backend. Use the connection form to connect to an existing Cassandra instance.

Host: your Cassandra host
Port: 9042
Datacenter: your datacenter name
Username: optional
Password: optional
Keyspace: optional

If Cassandra is running on your host machine and the backend is running in Docker Compose, use:

Host: host.docker.internal
Port: 9042
Datacenter: your datacenter name

Local Development

Run the backend:

cd backend
gradle bootRun

Run the frontend:

cd frontend
npm install
npm run dev

Open:

http://localhost:5173

The Vite dev server proxies /api to http://localhost:8080.

API

• POST /api/connections/test
• GET /api/keyspaces
• POST /api/keyspaces
• DELETE /api/keyspaces/{keyspace}
• GET /api/keyspaces/{keyspace}/tables
• GET /api/keyspaces/{keyspace}/tables/{table}/schema
• GET /api/keyspaces/{keyspace}/tables/{table}/data?page=&size=
• POST /api/query

POST /api/query accepts one Cassandra CQL statement. Statements that return rows are returned as tabular data; mutation and schema statements return a success message.