Dragonfly

Dragonfly is a modern, Redis-compatible in-memory datastore. Use it for caching, session storage, queues, and any workload where you'd normally use Redis.

Create a Dragonfly Service

1. Click Add Service in your project
2. Select Database
3. Choose Dragonfly
4. Select a storage size
5. Enter a name (e.g., dragonfly-cache, dragonfly-sessions)
6. Click Create

Rock8Cloud provisions the instance with networking handled automatically.

Environment Variables

After creation, Rock8Cloud exposes these variables for your application to connect:

Linking to Your Application

1. Go to your application service → Deployments → Env Vars
2. Add the Dragonfly variables using the names expected by your framework

Common framework patterns:

# Node.js (ioredis / redis)
REDIS_HOST=<HOST>
REDIS_PORT=<PORT>
# or
REDIS_URL=redis://<HOST>:<PORT>

# Python (redis-py)
REDIS_HOST=<HOST>
REDIS_PORT=<PORT>

# Rails (Sidekiq, Action Cable)
REDIS_URL=redis://<HOST>:<PORT>/0

After saving, your application automatically redeploys with the new configuration.

Logs and History

A Dragonfly service has two tabs of its own:

• Logs - live runtime logs streamed from the database pods. Click Start Logs to stream, scroll up to load older lines, and use copy or export to pull them out
• History - every deployment of this service with its status, version, storage size, and replica count. The current one is highlighted at the top

Features

• Redis-compatible - drop-in replacement for Redis, works with any Redis client library
• High performance - multi-threaded architecture, significantly faster than Redis for many workloads
• Persistent storage - data survives restarts and redeployments
• Network-isolated - only accessible from services within the same project
• Fully managed - automated lifecycle management with zero configuration

Troubleshooting

Connection refused

• Verify the HOST variable is correct - use the auto-generated hostname provided by Rock8Cloud
• Ensure your application service is in the same project as Dragonfly
• Check that the Dragonfly deployment completed successfully

Client compatibility

• Dragonfly supports the Redis protocol - use any standard Redis client
• If using advanced Redis features (e.g., Redis Modules), check Dragonfly's compatibility docs

Related

• PostgreSQL - Relational database
• S3 Object Storage - S3-compatible object storage
• Environment Variables - Configure secrets and settings