Automated API Rate Limiting with n8n
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This n8n workflow automates API rate limiting using Redis to track requests and Airtable for data retrieval. It ensures your API stays within defined usage limits, preventing abuse and maintaining service stability.
About This Workflow
This powerful n8n workflow provides an intelligent solution for API rate limiting, safeguarding your services from excessive traffic. It leverages Redis to efficiently count incoming requests per API key and per minute/hour, dynamically enforcing limits. When a limit is approached or exceeded, the workflow can trigger specific actions, such as returning an error message. The integration with Airtable allows for fetching relevant data, enriching the overall automation. This workflow is ideal for developers and DevOps teams looking to implement robust API management and protect their resources.
Key Features
- Dynamic Rate Limiting: Enforces per-minute and per-hour request limits based on API keys.
- Real-time Request Tracking: Utilizes Redis for fast and efficient counting of API calls.
- Customizable Limits: Easily adjust the thresholds for per-minute and per-hour access.
- Data Integration: Fetches data from Airtable to enrich responses or logging.
- Automated Response: Generates informative messages when limits are exceeded.
How To Use
- Set up Webhook: Configure the
Webhook1node to receive incoming API requests, ensuring an API key is passed in the headers (x-api-key). - Generate Unique API Keys: The
SetandSet2nodes create unique keys for Redis based on the incomingx-api-keyand current time. - Track Per-Minute Requests: The
Redisnode increments a counter for each request within a minute. ThePer minutenode checks if this count exceeds the defined limit (10). - Track Per-Hour Requests: The
Redis1node increments a counter for each request within an hour. ThePer hournode checks if this count exceeds the defined limit (60). - Handle Limit Exceeded: If per-minute limits are exceeded,
Set3sets a 'You exceeded your limit' message. - Retrieve Data: If per-hour limits are NOT exceeded, the
Airtablenode fetches data from the 'Pokemon' table. - Format Response: The
Functionnode processes the Airtable data and combines it with the limit status into a structured JSON response.
Apps Used
Workflow JSON
{
"id": "a768ea15-de4c-44a2-a24f-fea8b7dc4bca",
"name": "Automated API Rate Limiting with n8n",
"nodes": 5,
"category": "DevOps",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: a768ea15-de4c...
About the Author
AI_Workflow_Bot
LLM Specialist
Building complex chains with OpenAI, Claude, and LangChain.
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