Mario This workflow corresponds to n8n.io template #2270 — 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 →
{
"id": "IP7HrftumgPGb0sM",
"name": "Prevent simultaneous workflow executions V2",
"tags": [],
"nodes": [
{
"id": "58dc1dd1-38f7-4cab-aa91-007c35a72f07",
"name": "Schedule Trigger",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
64,
112
],
"parameters": {
"rule": {
"interval": [
{
"field": "seconds",
"secondsInterval": 5
}
]
}
},
"typeVersion": 1.2
},
{
"id": "28085fe4-2fd3-4c36-81eb-34bbec6e6f4f",
"name": "Execute Workflow",
"type": "n8n-nodes-base.executeWorkflow",
"position": [
960,
-64
],
"parameters": {
"options": {},
"workflowId": {
"__rl": true,
"mode": "list",
"value": "",
"cachedResultName": ""
}
},
"typeVersion": 1.1,
"alwaysOutputData": false
},
{
"id": "c0346bd9-2854-453d-a6c0-b25bd38a70b5",
"name": "Get Flag",
"type": "n8n-nodes-base.redis",
"position": [
288,
112
],
"parameters": {
"key": "=workflowRunning_{{ $workflow.id }}",
"options": {},
"operation": "get",
"propertyName": "=workflowRunning"
},
"credentials": {
"redis": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "1c671fda-a479-47a1-acfd-23b98f514de5",
"name": "Set Flag",
"type": "n8n-nodes-base.redis",
"position": [
736,
112
],
"parameters": {
"key": "=workflowRunning_{{ $workflow.id }}",
"value": "running",
"expire": true,
"operation": "set"
},
"credentials": {
"redis": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "75a1b909-0b39-4afc-812e-5dafc51fcef9",
"name": "Remove Flag",
"type": "n8n-nodes-base.redis",
"position": [
960,
288
],
"parameters": {
"key": "=workflowRunning_{{ $workflow.id }}",
"operation": "delete"
},
"credentials": {
"redis": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "7319acc6-6696-4b3d-9394-3b89effb0442",
"name": "Flag does not exists",
"type": "n8n-nodes-base.filter",
"position": [
512,
112
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "6b3359cb-c8fc-4663-b2a9-e367ad4fcba5",
"operator": {
"type": "string",
"operation": "empty",
"singleValue": true
},
"leftValue": "={{ $json.workflowRunning }}",
"rightValue": "={{ null }}"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "b268fe1f-200c-484d-81c6-2cd967960963",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
-752,
-128
],
"parameters": {
"width": 640,
"height": 576,
"content": "## How it works\n- This is a separate workflow which monitors the execution of the main workflow\n- Stores a flag in Redis (key dynamically named after workflow ID) which indicates if the main workflow is running or idle\n- The TTL setting ensures that the flag will also be removed automatically when the workflow hits the defined timeout\n- Only calls the main workflow if the last execution has finished\n\n## Setup\n- [ ] Update the interval in the Schedule Trigger\n- [ ] Turn your main workflow into a sub-workflow by adding an **Execute Workflow Trigger**\n- [ ] Set a reasonable timeout for that sub-workflow\n- [ ] Set the same timeout (seconds) in the TTL option of the **Set Flag** node\n- [ ] Select the right sub-workflow in the **Execute Workflow** node\n- [ ] Publish the workflow\n\n## Customization\n- Duplicate the **Execute Workflow** node and select another workflow you would like to run sequentially, then replace the placeholder node underneath with it\n- Make sure to set a timeout for that other workflow as well and then update the TTL value in the Redis node to the sum of all workflow timeouts\n- You can add as many workflow calls as you want, just make sure they are neatly organized below each other in one line to guarantee the right execution order"
},
"typeVersion": 1
},
{
"id": "1c286399-3c27-491b-916f-adb49465b8cf",
"name": "Optional: Execute another workflow",
"type": "n8n-nodes-base.noOp",
"position": [
960,
112
],
"parameters": {},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "5780a2be-c497-4ad8-b76d-4d4bbb754770",
"connections": {
"Get Flag": {
"main": [
[
{
"node": "Flag does not exists",
"type": "main",
"index": 0
}
]
]
},
"Set Flag": {
"main": [
[
{
"node": "Execute Workflow",
"type": "main",
"index": 0
},
{
"node": "Remove Flag",
"type": "main",
"index": 0
},
{
"node": "Optional: Execute another workflow",
"type": "main",
"index": 0
}
]
]
},
"Execute Workflow": {
"main": [
[]
]
},
"Schedule Trigger": {
"main": [
[
{
"node": "Get Flag",
"type": "main",
"index": 0
}
]
]
},
"Flag does not exists": {
"main": [
[
{
"node": "Set Flag",
"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
For the full experience including quality scoring and batch install features for each workflow upgrade to Pro
About this workflow
This ensures that executions of scheduled workflows do not overlap when they take longer than expected. This is a separate workflow which monitors the execution of the main workflow Stores a flag in Redis (key dynamically named after workflow ID) which indicates if the main…
Source: https://n8n.io/workflows/2270/ — 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.
Agendamiento. Uses n8n-nodes-evolution-api, redis, dataTable, executeWorkflowTrigger. Event-driven trigger; 60 nodes.
This template is an interactive playground designed to help you master the most useful keyboard shortcuts in n8n and supercharge your building speed. Forget boring lists—this workflow gives you hands-
Prevent concurrent workflow runs using Redis. Uses executeWorkflowTrigger, manualTrigger, stickyNote, executeWorkflow. Event-driven trigger; 43 nodes.
This workflow sets a small "lock" value in Redis so that only one copy of a long job can run at the same time. If another trigger fires while the job is still busy, the workflow sees the lock, stops e
Workflow 2469. Uses moveBinaryData, googleDrive, itemLists, n8n. Scheduled trigger; 33 nodes.