Use Redis to rate-limit your low-code API
Description
Categories
🔧 Engineering
Nodes Used
n8n-nodes-base.ifn8n-nodes-base.ifn8n-nodes-base.setn8n-nodes-base.setn8n-nodes-base.setn8n-nodes-base.setn8n-nodes-base.redisn8n-nodes-base.redisn8n-nodes-base.webhookn8n-nodes-base.airtable
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Last Updated11/28/2025
workflow.json
{
"nodes": [
{
"name": "Airtable",
"type": "n8n-nodes-base.airtable",
"position": [
1650,
300
],
"parameters": {
"table": "Pokemon",
"operation": "list",
"additionalOptions": {}
},
"credentials": {
"airtableApi": "Airtable Credentials @n8n"
},
"typeVersion": 1
},
{
"name": "Redis",
"type": "n8n-nodes-base.redis",
"position": [
600,
600
],
"parameters": {
"key": "={{$json[\"apiKey\"]}}",
"ttl": 3600,
"expire": true,
"operation": "incr"
},
"credentials": {
"redis": "Redis Cloud Credentials"
},
"typeVersion": 1
},
{
"name": "Redis1",
"type": "n8n-nodes-base.redis",
"position": [
1200,
450
],
"parameters": {
"key": "={{$json[\"apiKey\"]}}",
"operation": "incr"
},
"credentials": {
"redis": "Redis Cloud Credentials"
},
"typeVersion": 1
},
{
"name": "Set1",
"type": "n8n-nodes-base.set",
"position": [
1600,
550
],
"parameters": {
"values": {
"string": [
{
"name": "message",
"value": "You exceeded your limit"
}
]
},
"options": {},
"keepOnlySet": true
},
"typeVersion": 1
},
{
"name": "Webhook1",
"type": "n8n-nodes-base.webhook",
"position": [
200,
600
],
"webhookId": "a3167ed7-98d2-422c-bfe2-e3ba599d19f1",
"parameters": {
"path": "a3167ed7-98d2-422c-bfe2-e3ba599d19f1",
"options": {},
"responseMode": "lastNode",
"authentication": "headerAuth"
},
"credentials": {
"httpHeaderAuth": "Credential Example"
},
"typeVersion": 1
},
{
"name": "Function",
"type": "n8n-nodes-base.function",
"position": [
1900,
300
],
"parameters": {
"functionCode": " const limit = `Limit consumed: `+ $node['Redis1'].json[$node[\"Set2\"].json[\"apiKey\"]];\n return [\n {\n json: {\n message:limit,\n body: items.map(item => {\n const name= item.json.fields.name\n const url= item.json.fields.url\n return {name,url}\n })\n }\n }\n]\n"
},
"typeVersion": 1
},
{
"name": "Set",
"type": "n8n-nodes-base.set",
"position": [
400,
600
],
"parameters": {
"values": {
"string": [
{
"name": "apiKey",
"value": "={{$json[\"headers\"][\"x-api-key\"] +'-'+ new Date().getHours() +'-'+ new Date().getMinutes()}}"
}
]
},
"options": {},
"keepOnlySet": true
},
"typeVersion": 1
},
{
"name": "Set2",
"type": "n8n-nodes-base.set",
"position": [
1000,
450
],
"parameters": {
"values": {
"string": [
{
"name": "apiKey",
"value": "={{$node['Webhook1'].json[\"headers\"][\"x-api-key\"] +'-'+ new Date().getHours()}}"
}
]
},
"options": {},
"keepOnlySet": true
},
"typeVersion": 1
},
{
"name": "Set3",
"type": "n8n-nodes-base.set",
"position": [
1000,
700
],
"parameters": {
"values": {
"string": [
{
"name": "message",
"value": "You exceeded your limit"
}
]
},
"options": {},
"keepOnlySet": true
},
"typeVersion": 1
},
{
"name": "Per hour",
"type": "n8n-nodes-base.if",
"position": [
1400,
450
],
"parameters": {
"conditions": {
"number": [
{
"value1": "={{$json[$node[\"Set2\"].json[\"apiKey\"]]}}",
"value2": 60
}
],
"string": []
}
},
"typeVersion": 1
},
{
"name": "Per minute",
"type": "n8n-nodes-base.if",
"position": [
800,
600
],
"parameters": {
"conditions": {
"number": [
{
"value1": "={{$json[$node[\"Set\"].json[\"apiKey\"]]}}",
"value2": 10,
"operation": "smallerEqual"
}
]
}
},
"typeVersion": 1
}
],
"connections": {
"Set": {
"main": [
[
{
"node": "Redis",
"type": "main",
"index": 0
}
]
]
},
"Set2": {
"main": [
[
{
"node": "Redis1",
"type": "main",
"index": 0
}
]
]
},
"Redis": {
"main": [
[
{
"node": "Per minute",
"type": "main",
"index": 0
}
]
]
},
"Redis1": {
"main": [
[
{
"node": "Per hour",
"type": "main",
"index": 0
}
]
]
},
"Airtable": {
"main": [
[
{
"node": "Function",
"type": "main",
"index": 0
}
]
]
},
"Per hour": {
"main": [
[
{
"node": "Airtable",
"type": "main",
"index": 0
}
],
[
{
"node": "Set1",
"type": "main",
"index": 0
}
]
]
},
"Webhook1": {
"main": [
[
{
"node": "Set",
"type": "main",
"index": 0
}
]
]
},
"Per minute": {
"main": [
[
{
"node": "Set2",
"type": "main",
"index": 0
}
],
[
{
"node": "Set3",
"type": "main",
"index": 0
}
]
]
}
}
}