# Redis and Dragonfly

Neutron does not require Dragonfly. Its optional Redis integrations accept a
Redis or Dragonfly connection URL because both expose the commands these
drivers use.

## Cache client

```ts
import { createRedisCacheClient } from "@neutron-build/data";

const cache = await createRedisCacheClient({
  url: process.env.DRAGONFLY_URL ?? process.env.REDIS_URL,
  keyPrefix: "my-app:",
});

await cache.set("status", "ready", 60);
const status = await cache.get("status");
await cache.close();
```

The client implements `get`, `set`, `del`, and `incr`. If no URL is passed, it
checks `DRAGONFLY_URL`, then `REDIS_URL`, then uses
`redis://127.0.0.1:6379`.

## BullMQ queue

BullMQ and `ioredis` are optional peer dependencies:

```bash
npm install @neutron-build/data bullmq ioredis
```

```ts
import { createBullMqQueueDriver } from "@neutron-build/data";

const queue = await createBullMqQueueDriver({ queueName: "media" });

await queue.process("transcode", async (job) => {
  await transcode(job.payload);
});

await queue.add("transcode", { assetId: "asset_123" });
```

`@neutron-build/data` also exports Redis-compatible session and realtime
drivers. These are explicit application choices; Neutron does not start or
configure a Dragonfly server automatically.