Who is this workflow for? This workflow leverages Redis to implement effective rate limiting for your low-code API. By uniquely identifying users with their API keys, it ensures controlled access and prevents abuse, enhancing the reliability and performance of your API services..

What does this workflow do?

  • Webhook Trigger: The workflow begins with a Webhook node that listens for incoming API requests. Each request includes an API key that identifies the user.
  • Extract API Key: The incoming API key is extracted from the request data to uniquely identify the user making the request.
  • Redis Integration: The extracted API key is used as a unique identifier in Redis. Each time a request is received, the corresponding value in Redis is incremented by one.
  • Check Rate Limit: An IF node evaluates whether the incremented value exceeds the predefined threshold. If the limit is not exceeded, the request proceeds; otherwise, it is blocked or throttled.
  • Respond to Webhook: Depending on the evaluation, the Respond to Webhook node sends an appropriate response back to the user, indicating whether their request was successful or rate-limited.
  • Optional Integrations: The workflow can be extended with additional integrations such as Airtable for logging requests, GitHub for version control, Google Sheets for reporting, and more, providing a comprehensive solution for managing API usage.

🤖 Why Use This Automation Workflow?

  • Prevent API Abuse: Safeguard your API from excessive requests that can degrade performance or lead to downtime.
  • Enhance User Management: Automatically monitor and control each user’s request rate based on their unique API key.
  • Seamless Integration: Easily integrates with popular tools like Airtable, GitHub, and Google Sheets, streamlining your workflow management.

👨‍💻 Who is This Workflow For?

This workflow is ideal for developers and businesses that manage APIs and need to control the rate of incoming requests without extensive coding. It is particularly useful for those using low-code platforms like n8n to automate and manage their workflows efficiently.

🎯 Use Cases

  1. API Service Providers: Ensure fair usage of your API by limiting the number of requests per user, preventing any single user from monopolizing resources.
  2. Web Applications: Protect your web applications from potential DDoS attacks by implementing rate limits on incoming requests.
  3. Developer Platforms: Manage and monitor API usage by developers, providing different rate limits based on subscription tiers or user roles.

TL;DR

This n8n workflow template utilizes Redis to effectively rate-limit your low-code API by tracking and controlling user requests based on their unique API keys. By implementing this workflow, you can ensure fair usage, enhance security, and maintain the performance of your API services with minimal configuration.

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