Geoffrey Saxena This workflow corresponds to n8n.io template #3444 — we link there as the canonical source.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"nodes": [
{
"id": "ffe22db7-06b9-4efe-ab35-758e420dbe57",
"name": "END",
"type": "n8n-nodes-base.noOp",
"position": [
-2880,
540
],
"parameters": {},
"typeVersion": 1
},
{
"id": "9480feb6-e12a-4b59-998e-bdc7b119087a",
"name": "Workflow 1",
"type": "n8n-nodes-base.set",
"position": [
-2620,
-20
],
"parameters": {
"options": {}
},
"typeVersion": 3.4
},
{
"id": "54492842-137b-48d6-851a-1ce6cc751612",
"name": "Workflow 2",
"type": "n8n-nodes-base.set",
"position": [
-2620,
200
],
"parameters": {
"options": {}
},
"typeVersion": 3.4
},
{
"id": "83bbda2c-112b-4ed0-9ccd-c7a5c840100d",
"name": "Workflow 3",
"type": "n8n-nodes-base.set",
"position": [
-2620,
420
],
"parameters": {
"options": {}
},
"typeVersion": 3.4
},
{
"id": "74d889d9-5215-495b-8e60-e1c78d79ae8c",
"name": "Incoming Webhook Data",
"type": "n8n-nodes-base.webhook",
"position": [
-4760,
220
],
"parameters": {
"path": "94d08900-4816-4c74-962a-aacff5077d5d",
"options": {}
},
"typeVersion": 2
},
{
"id": "cb5e3e72-6678-4efb-8301-f149014444d2",
"name": "Fetch Webhook Data & Declare lockValue",
"type": "n8n-nodes-base.code",
"position": [
-4520,
220
],
"parameters": {
"jsCode": "// Parse the Slack payload\nconst payload = JSON.parse($('Incoming Webhook Data').first().json[\"body\"][\"payload\"]);\n\n// Extract button action details\nconst var1 = payload.var1;\nconst var2 = payload.var2;\nconst var3 = payload.var3;\n\n// Log or return the details\nreturn {\n var1 : var1,\n var2: var2,\n var3: var3,\n lockValue : `${var1}-${var2}-${var3}`\n};"
},
"typeVersion": 2
},
{
"id": "e118f753-945b-4951-95da-394732fc636c",
"name": "Check Redis Lock",
"type": "n8n-nodes-base.redis",
"position": [
-4220,
220
],
"parameters": {
"key": "xyz-lock",
"options": {},
"operation": "get",
"propertyName": "Element"
},
"credentials": {
"redis": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "c1488bae-cb82-48ce-94cd-5359d7d10b04",
"name": "Acquire Redis Lock",
"type": "n8n-nodes-base.redis",
"position": [
-3520,
200
],
"parameters": {
"key": "xyz-lock",
"ttl": 180,
"value": "={{ $('Fetch Webhook Data & Declare lockValue').item.json.lookupVariable }}",
"expire": true,
"operation": "set"
},
"credentials": {
"redis": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "0fe5e1d8-f1e4-40e0-a3a4-4c00bbf2b50b",
"name": "redisLock existence boolean",
"type": "n8n-nodes-base.if",
"position": [
-4020,
220
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "905501b4-718c-44fb-b2a5-a8eaf8605511",
"operator": {
"type": "string",
"operation": "empty",
"singleValue": true
},
"leftValue": "={{ $json.Element }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "3c66fab5-2c2a-4bba-8ba1-ed85e57cd42d",
"name": "redisLock acquired booleans",
"type": "n8n-nodes-base.if",
"position": [
-3800,
320
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "6c071e68-a15a-4da8-b962-fe173b1eb145",
"operator": {
"type": "string",
"operation": "notExists",
"singleValue": true
},
"leftValue": "={{ $json.Element }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "787d1c86-1a66-40ea-b8b6-29f50a48737c",
"name": "Poll for lock",
"type": "n8n-nodes-base.wait",
"position": [
-3520,
420
],
"parameters": {},
"typeVersion": 1.1
},
{
"id": "f5b88169-e97b-4359-890e-969dbdc6d829",
"name": "duplicateWebhook boolean",
"type": "n8n-nodes-base.if",
"position": [
-3200,
420
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "08500e34-cc7f-4005-87bd-f7250dc076fe",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $('Fetch Webhook Data & Declare lockValue').item.json.lookupVariable }}",
"rightValue": "={{ $input.first().json.Element }}"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "db4e4149-7970-402c-a3d7-2cfe47b6a5b7",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-4760,
-120
],
"parameters": {
"color": 6,
"width": 480,
"height": 220,
"content": "#### \ud83d\udd12 This workflow demonstrates Redis-based locking to prevent concurrent execution of workflows.\n\n**Steps:**\n+ Try to acquire a lock via Redis\n+ If successful, execute workflow\n+ If duplicate request; ignore request\n+ Release the lock after completion"
},
"typeVersion": 1
},
{
"id": "879b7ab5-402b-4ea8-977b-64d29cd9bb39",
"name": "Discard Redis Lock",
"type": "n8n-nodes-base.redis",
"position": [
-2320,
200
],
"parameters": {
"key": "n8n-rca-lock",
"operation": "delete"
},
"credentials": {
"redis": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "494030d6-e731-4f4f-9193-7b46f2d470d0",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-3580,
80
],
"parameters": {
"color": 5,
"width": 220,
"height": 80,
"content": "Attempts to acquire a lock using Redis by setting a key with expiration."
},
"typeVersion": 1
},
{
"id": "a643b45e-2067-4c42-8c1c-365b3fea911a",
"name": "Workflow Switch",
"type": "n8n-nodes-base.switch",
"position": [
-2880,
200
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "1",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "2761039b-e76c-4606-9aaf-48a569942ab7",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "",
"rightValue": ""
}
]
},
"renameOutput": true
},
{
"outputKey": "2",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "ef07c62f-bd3f-4f54-85b9-9dbf64915f2c",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "",
"rightValue": ""
}
]
},
"renameOutput": true
},
{
"outputKey": "3",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "2dfc15de-bf33-4c25-932f-dae16758e2e6",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "",
"rightValue": ""
}
]
},
"renameOutput": true
}
]
},
"options": {}
},
"typeVersion": 3.2
},
{
"id": "5531d4c3-158c-4f98-b6fa-9ef9a85eef71",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2940,
680
],
"parameters": {
"color": 5,
"height": 80,
"content": "Skips execution when duplicate request is received."
},
"typeVersion": 1
},
{
"id": "0a159f03-3ecc-4010-ab63-cc24df90df31",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2320,
100
],
"parameters": {
"color": 5,
"height": 80,
"content": "Deletes the Redis lock key to release the lock."
},
"typeVersion": 1
}
],
"connections": {
"Workflow 1": {
"main": [
[
{
"node": "Discard Redis Lock",
"type": "main",
"index": 0
}
]
]
},
"Workflow 2": {
"main": [
[
{
"node": "Discard Redis Lock",
"type": "main",
"index": 0
}
]
]
},
"Workflow 3": {
"main": [
[
{
"node": "Discard Redis Lock",
"type": "main",
"index": 0
}
]
]
},
"Poll for lock": {
"main": [
[
{
"node": "duplicateWebhook boolean",
"type": "main",
"index": 0
}
]
]
},
"Workflow Switch": {
"main": [
[
{
"node": "Workflow 1",
"type": "main",
"index": 0
}
],
[
{
"node": "Workflow 2",
"type": "main",
"index": 0
}
],
[
{
"node": "Workflow 3",
"type": "main",
"index": 0
}
]
]
},
"Check Redis Lock": {
"main": [
[
{
"node": "redisLock existence boolean",
"type": "main",
"index": 0
}
]
]
},
"Acquire Redis Lock": {
"main": [
[
{
"node": "Workflow Switch",
"type": "main",
"index": 0
}
]
]
},
"Incoming Webhook Data": {
"main": [
[
{
"node": "Fetch Webhook Data & Declare lockValue",
"type": "main",
"index": 0
}
]
]
},
"duplicateWebhook boolean": {
"main": [
[
{
"node": "END",
"type": "main",
"index": 0
}
],
[
{
"node": "Check Redis Lock",
"type": "main",
"index": 0
}
]
]
},
"redisLock acquired booleans": {
"main": [
[
{
"node": "Acquire Redis Lock",
"type": "main",
"index": 0
}
],
[
{
"node": "Poll for lock",
"type": "main",
"index": 0
}
]
]
},
"redisLock existence boolean": {
"main": [
[
{
"node": "Acquire Redis Lock",
"type": "main",
"index": 0
}
],
[
{
"node": "redisLock acquired booleans",
"type": "main",
"index": 0
}
]
]
},
"Fetch Webhook Data & Declare lockValue": {
"main": [
[
{
"node": "Check Redis Lock",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
redis
Pro
For the full experience including quality scoring and batch install features for each workflow upgrade to Pro
About this workflow
This workflow is great for n8n users who want to prevent duplicate or overlapping workflow runs. If you're a developer, DevOps engineer, or automation enthusiast managing tasks like database updates, syncing tools, or hitting rate-limited APIs, this one’s for you.
Source: https://n8n.io/workflows/3444/ — original creator credit. Request a take-down →
Related workflows
Workflows that share integrations, category, or trigger type with this one. All free to copy and import.
Cleaning Inspection - Submit. Uses redis. Webhook trigger; 7 nodes.
Redis
A production-ready authentication workflow implementing secure user registration, login, token verification, and refresh token mechanisms. Perfect for adding authentication to any application without
Crypto, Data Table, Execute Workflow Trigger
Agendamiento. Uses n8n-nodes-evolution-api, redis, dataTable, executeWorkflowTrigger. Event-driven trigger; 60 nodes.
N8N Nodes Evolution Api, Redis, Data Table +2
Portfolio Orchestrator. Uses httpRequest. Webhook trigger; 59 nodes.
HTTP Request
Prevent concurrent workflow runs using Redis. Uses executeWorkflowTrigger, manualTrigger, stickyNote, executeWorkflow. Event-driven trigger; 43 nodes.
Execute Workflow Trigger, Redis, Stop And Error