Redis configuration

Queues and workers connect via useRuntimeConfig().redis in resolveConnection(). Use REDIS_* during dev/build and NUXT_REDIS_* at runtime (when running the built server).

Nuxt only applies env overrides at runtime for variables that match declared runtimeConfig keys and use the NUXT_ prefix. After nuxi build, your project .env file is not read in production — you must set variables in the host environment (Docker environment:, Kubernetes secrets, etc.).

Using Valkey? Read this thread.

Environment variables

Runtime config key	Build / dev (nuxi dev, nuxi build)	Runtime (production server)
redis.url	REDIS_URL	NUXT_REDIS_URL
redis.host	REDIS_HOST	NUXT_REDIS_HOST
redis.port	REDIS_PORT	NUXT_REDIS_PORT
redis.password	REDIS_PASSWORD	NUXT_REDIS_PASSWORD
redis.db	REDIS_DB	NUXT_REDIS_DB
redis.username	REDIS_USERNAME	NUXT_REDIS_USERNAME
redis.lazyConnect	REDIS_LAZY_CONNECT (true / omitted)	NUXT_REDIS_LAZY_CONNECT
redis.connectTimeout	REDIS_CONNECT_TIMEOUT (ms)	NUXT_REDIS_CONNECT_TIMEOUT

REDIS_* — build and dev

Read when the module runs (during nuxi dev, nuxi build, or nuxi prepare). Nuxt CLI loads .env in those commands, so this is the usual choice for local development:

REDIS_URL=redis://127.0.0.1:6379/0
# Optional (same names as 0.x processor.redis)
REDIS_USERNAME=myuser
REDIS_LAZY_CONNECT=true
REDIS_CONNECT_TIMEOUT=10000

Values are merged into runtimeConfig.redis and baked into the Nitro output. They apply at runtime unless overridden by NUXT_REDIS_*.

NUXT_REDIS_* — runtime only

Use for production and Docker: env vars you inject when the container (or process) starts, not when the image is built.

Nuxt documents this under runtime config environment variables — only NUXT_-prefixed names override runtimeConfig at runtime. See also .env in production: the .env file is not loaded after nuxi build, so REDIS_URL in a container env block will not apply unless it was baked in at build time or you use NUXT_REDIS_URL.

NUXT_REDIS_URL=redis://redis:6379/0 node .output/server/index.mjs
NUXT_REDIS_URL=redis://redis:6379/0 node .output/server/workers/index.mjs

Docker Compose — set NUXT_REDIS_* on both the app service and the workers service (same values):

services:
  app:
    environment:
      NUXT_REDIS_URL: redis://redis:6379/0
  workers:
    environment:
      NUXT_REDIS_URL: redis://redis:6379/0

Alternatively, pass REDIS_URL at image build time (docker build / CI) so it is embedded during nuxi build; runtime still prefers NUXT_REDIS_* if set.

Precedence

For each key, the first non-empty value wins (empty strings are ignored):

1. runtimeConfig.redis in nuxt.config (merged last at module setup — overrides REDIS_* from the build environment)
2. NUXT_REDIS_* when the server process starts
3. Values baked in from REDIS_* at build (if not overridden above)
4. ioredis defaults (127.0.0.1:6379)

Examples

Local .env (dev / build):

REDIS_URL=redis://127.0.0.1:6379/0

Docker deploy (runtime) — per Nuxt production env guidance, configure the orchestrator (Compose, Kubernetes, etc.), not a .env file in the image:

environment:
  NUXT_REDIS_URL: redis://redis:6379/0

Set the same NUXT_REDIS_* values on the Nuxt app container and the workers container. Example: playground compose.runtime.yml.

Optional nuxt.config:

export default defineNuxtConfig({
  modules: ['nuxt-processor'],
  runtimeConfig: {
    redis: {
      url: 'redis://127.0.0.1:6379/0',
    },
  },
})

Connection options (0.x parity)

These were supported on processor.redis in 0.x and map to the same ioredis / BullMQ RedisOptions fields on runtimeConfig.redis:

Option	Env (build)	Env (runtime)	Notes
username	REDIS_USERNAME	NUXT_REDIS_USERNAME	Redis ACL user (Redis 6+)
lazyConnect	REDIS_LAZY_CONNECT=true	NUXT_REDIS_LAZY_CONNECT	Opt in when you want to defer connecting until the first Redis command (e.g. avoid build-time connects)
connectTimeout	REDIS_CONNECT_TIMEOUT	NUXT_REDIS_CONNECT_TIMEOUT	Milliseconds

You can also set any of these in runtimeConfig.redis in nuxt.config (wins over REDIS_* at build).

Defaults

If no host/url/port options apply after the precedence above, ioredis uses 127.0.0.1:6379. Empty strings in config are ignored so unset keys do not block fallbacks.

Module options

See API — Module options.

Typing

The module augments @nuxt/schema with RuntimeConfig.redis (RedisOptions plus optional url). Extend nuxt/schema in your app for stricter typing if needed.