From fe94f4ce0b30f049a329736fcb4cc971e71c0861 Mon Sep 17 00:00:00 2001
From: Mauricio Siu <siumauricio@icloud.com>
Date: Tue, 14 Jul 2026 16:15:50 -0600
Subject: [PATCH] feat: add n8n queue mode template

n8n running in queue mode (EXECUTIONS_MODE=queue): main instance for the
editor/webhooks, a scalable pool of workers (deploy.replicas driven by the
N8N_WORKER_REPLICAS env var), Redis (Bull) as the queue broker and
PostgreSQL as the database. Pinned to the current stable n8nio/n8n:2.30.4.

Closes #455

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 blueprints/n8n-queue/docker-compose.yml | 124 ++++++++++++++++++++++++
 blueprints/n8n-queue/instructions.md    |  24 +++++
 blueprints/n8n-queue/meta.json          |  18 ++++
 blueprints/n8n-queue/n8n.png            | Bin 0 -> 6592 bytes
 blueprints/n8n-queue/template.toml      |  33 +++++++
 5 files changed, 199 insertions(+)
 create mode 100644 blueprints/n8n-queue/docker-compose.yml
 create mode 100644 blueprints/n8n-queue/instructions.md
 create mode 100644 blueprints/n8n-queue/meta.json
 create mode 100644 blueprints/n8n-queue/n8n.png
 create mode 100644 blueprints/n8n-queue/template.toml

diff --git a/blueprints/n8n-queue/docker-compose.yml b/blueprints/n8n-queue/docker-compose.yml
new file mode 100644
index 00000000..f0b601d1
--- /dev/null
+++ b/blueprints/n8n-queue/docker-compose.yml
@@ -0,0 +1,124 @@
+services:
+  postgres:
+    image: postgres:17-alpine
+    restart: unless-stopped
+    environment:
+      - POSTGRES_USER=${POSTGRES_USER}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
+      - POSTGRES_DB=${POSTGRES_DB}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d ${POSTGRES_DB}"]
+      start_period: 30s
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:7-alpine
+    restart: unless-stopped
+    command: redis-server --requirepass ${REDIS_PASSWORD}
+    environment:
+      - REDIS_PASSWORD=${REDIS_PASSWORD}
+    volumes:
+      - redis_data:/data
+    healthcheck:
+      test: ["CMD-SHELL", "redis-cli -a \"$$REDIS_PASSWORD\" ping | grep PONG"]
+      start_period: 20s
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  # Main instance: serves the editor UI and webhooks, publishes executions
+  # to the Redis (Bull) queue instead of running them itself.
+  n8n:
+    image: n8nio/n8n:2.30.4
+    restart: unless-stopped
+    environment:
+      # PostgreSQL
+      - DB_TYPE=postgresdb
+      - DB_POSTGRESDB_HOST=postgres
+      - DB_POSTGRESDB_PORT=5432
+      - DB_POSTGRESDB_DATABASE=${POSTGRES_DB}
+      - DB_POSTGRESDB_USER=${POSTGRES_USER}
+      - DB_POSTGRESDB_PASSWORD=${POSTGRES_PASSWORD}
+
+      # Queue mode (Redis / Bull)
+      - EXECUTIONS_MODE=queue
+      - QUEUE_BULL_REDIS_HOST=redis
+      - QUEUE_BULL_REDIS_PORT=6379
+      - QUEUE_BULL_REDIS_PASSWORD=${REDIS_PASSWORD}
+      - QUEUE_HEALTH_CHECK_ACTIVE=true
+      - OFFLOAD_MANUAL_EXECUTIONS_TO_WORKERS=true
+
+      # Encryption key shared between the main instance and the workers
+      - N8N_ENCRYPTION_KEY=${N8N_ENCRYPTION_KEY}
+
+      # Networking
+      - N8N_HOST=${N8N_HOST}
+      - N8N_PORT=5678
+      - N8N_PROTOCOL=http
+      - N8N_PROXY_HOPS=1
+      - NODE_ENV=production
+      - N8N_WEBHOOK_URL=https://${N8N_HOST}/
+      - N8N_EDITOR_BASE_URL=https://${N8N_HOST}/
+      - GENERIC_TIMEZONE=${GENERIC_TIMEZONE}
+      - N8N_SECURE_COOKIE=false
+    volumes:
+      - n8n_data:/home/node/.n8n
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "wget --spider -q http://127.0.0.1:5678/healthz"]
+      start_period: 60s
+      interval: 10s
+      timeout: 5s
+      retries: 10
+
+  # Queue workers: pull executions from Redis and run them. Scale them by
+  # changing the N8N_WORKER_REPLICAS environment variable and redeploying.
+  n8n-worker:
+    image: n8nio/n8n:2.30.4
+    restart: unless-stopped
+    command: worker
+    deploy:
+      replicas: ${N8N_WORKER_REPLICAS:-2}
+    environment:
+      # PostgreSQL
+      - DB_TYPE=postgresdb
+      - DB_POSTGRESDB_HOST=postgres
+      - DB_POSTGRESDB_PORT=5432
+      - DB_POSTGRESDB_DATABASE=${POSTGRES_DB}
+      - DB_POSTGRESDB_USER=${POSTGRES_USER}
+      - DB_POSTGRESDB_PASSWORD=${POSTGRES_PASSWORD}
+
+      # Queue mode (Redis / Bull)
+      - EXECUTIONS_MODE=queue
+      - QUEUE_BULL_REDIS_HOST=redis
+      - QUEUE_BULL_REDIS_PORT=6379
+      - QUEUE_BULL_REDIS_PASSWORD=${REDIS_PASSWORD}
+      - QUEUE_HEALTH_CHECK_ACTIVE=true
+
+      # Must be the same key as the main instance
+      - N8N_ENCRYPTION_KEY=${N8N_ENCRYPTION_KEY}
+
+      - NODE_ENV=production
+      - GENERIC_TIMEZONE=${GENERIC_TIMEZONE}
+    depends_on:
+      n8n:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "wget --spider -q http://127.0.0.1:5678/healthz"]
+      start_period: 60s
+      interval: 10s
+      timeout: 5s
+      retries: 10
+
+volumes:
+  postgres_data:
+  redis_data:
+  n8n_data:
diff --git a/blueprints/n8n-queue/instructions.md b/blueprints/n8n-queue/instructions.md
new file mode 100644
index 00000000..782571b8
--- /dev/null
+++ b/blueprints/n8n-queue/instructions.md
@@ -0,0 +1,24 @@
+# n8n Queue Mode
+
+This template runs n8n in [queue mode](https://docs.n8n.io/hosting/scaling/queue-mode/):
+
+- **n8n** (main): serves the editor UI and receives webhooks/triggers, then publishes executions to the queue.
+- **n8n-worker** (x2 by default): pulls executions from the Redis (Bull) queue and runs them.
+- **redis**: the message broker for the queue (password protected).
+- **postgres**: stores workflows, credentials and execution data.
+
+All n8n containers share the same `N8N_ENCRYPTION_KEY` (generated automatically), which is required for workers to decrypt credentials.
+
+## Scaling workers
+
+Worker replicas are controlled by the `N8N_WORKER_REPLICAS` environment variable (default `2`):
+
+1. Open the compose service in Dokploy and go to the **Environment** tab.
+2. Change `N8N_WORKER_REPLICAS` to the number of workers you want.
+3. Redeploy. Docker Compose will scale the `n8n-worker` service to the requested number of replicas.
+
+Each worker runs up to 10 concurrent executions by default. You can tune this by adding `N8N_CONCURRENCY_PRODUCTION_LIMIT` to the worker environment.
+
+## Optional: dedicated webhook processors
+
+For very high webhook volumes, n8n supports dedicated webhook processor instances (`command: webhook`). To use them, add another service to the compose file with the same environment as `n8n-worker` but with `command: webhook`, and route the `/webhook/` path of your domain to it. See the [n8n queue mode docs](https://docs.n8n.io/hosting/scaling/queue-mode/#webhook-processors) for details.
diff --git a/blueprints/n8n-queue/meta.json b/blueprints/n8n-queue/meta.json
new file mode 100644
index 00000000..e0ada259
--- /dev/null
+++ b/blueprints/n8n-queue/meta.json
@@ -0,0 +1,18 @@
+{
+  "id": "n8n-queue",
+  "name": "n8n Queue Mode",
+  "version": "2.30.4",
+  "description": "n8n running in queue mode for high-throughput production workloads: the main instance handles the editor and webhooks while a scalable pool of workers executes workflows from a Redis (Bull) queue, backed by PostgreSQL.",
+  "logo": "n8n.png",
+  "links": {
+    "github": "https://github.com/n8n-io/n8n",
+    "website": "https://n8n.io/",
+    "docs": "https://docs.n8n.io/hosting/scaling/queue-mode/"
+  },
+  "tags": [
+    "automation",
+    "workflow",
+    "low-code",
+    "queue"
+  ]
+}
diff --git a/blueprints/n8n-queue/n8n.png b/blueprints/n8n-queue/n8n.png
new file mode 100644
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diff --git a/blueprints/n8n-queue/template.toml b/blueprints/n8n-queue/template.toml
new file mode 100644
index 00000000..46ce3fbe
--- /dev/null
+++ b/blueprints/n8n-queue/template.toml
@@ -0,0 +1,33 @@
+[variables]
+main_domain = "${domain}"
+postgres_user = "${username}"
+postgres_password = "${password:24}"
+postgres_db = "n8n"
+redis_password = "${password:24}"
+n8n_encryption_key = "${base64:32}"
+
+[config]
+mounts = []
+
+[[config.domains]]
+serviceName = "n8n"
+port = 5_678
+host = "${main_domain}"
+
+[config.env]
+N8N_HOST = "${main_domain}"
+GENERIC_TIMEZONE = "Europe/Berlin"
+
+# Number of queue workers. Change it and redeploy to scale.
+N8N_WORKER_REPLICAS = "2"
+
+# PostgreSQL
+POSTGRES_USER = "${postgres_user}"
+POSTGRES_PASSWORD = "${postgres_password}"
+POSTGRES_DB = "${postgres_db}"
+
+# Redis (Bull queue)
+REDIS_PASSWORD = "${redis_password}"
+
+# Encryption key shared by the main instance and the workers (IMPORTANT)
+N8N_ENCRYPTION_KEY = "${n8n_encryption_key}"