Buffer ChatBot Enhanced
Advanced chatbot functionality with smart rate limiting, message buffering, session management, and Redis integration for scalable conversation automation
Actions3
- Message Actions
Overview
This node implements advanced rate limiting for chatbot messages to prevent flooding and abuse. It supports multiple rate limiting strategies such as global, per session, per user, and smart adaptive limits. The node uses Redis for state management and supports algorithms like token bucket, sliding window, and fixed window. It can apply penalties for exceeding limits and adapt limits based on usage patterns. This is useful for managing message flow in chatbots to ensure fair usage and prevent spam or overload.
Use Case Examples
- Limit the number of messages a user can send per minute to avoid flooding.
- Apply a global rate limit to all messages to control overall chatbot load.
- Use smart adaptive rate limiting to dynamically adjust limits based on user behavior patterns.
Properties
| Name | Meaning |
|---|---|
| Session Key | Unique identifier for the user or session, used to track rate limits per user or session. |
| Message Content | The content of the message being sent, used for logging and analysis. |
| Limit Type | The type of rate limiting to apply, such as disabled, global, per session, per user, or smart adaptive. |
| Algorithm | The rate limiting algorithm to use, such as token bucket, sliding window, or fixed window. |
| Max Requests | Maximum number of requests allowed per time window. |
| Time Window (Seconds) | The duration of the time window for rate limiting in seconds. |
| Burst Limit | Maximum burst requests allowed, applicable only for the token bucket algorithm. |
| Penalty Multiplier | Multiplier for penalty time when limits are exceeded, used in smart adaptive limiting. |
| Enable Adaptive | Whether to enable adaptive rate adjustments based on usage patterns, applicable for smart adaptive limiting. |
| Baseline Window (Minutes) | Time window to establish baseline usage patterns for adaptive limiting. |
| Redis Key Prefix | Prefix for Redis keys to avoid collisions in storage. |
Output
JSON
type- Type of rate limit event or status (e.g., allowed, exceeded, penalty, disabled).message- The message content associated with the rate limit event.sessionId- The session or user identifier related to the rate limit event.remainingRequests- Number of remaining allowed requests in the current window.resetTime- Timestamp when the rate limit window resets.retryAfter- Time to wait before retrying after limit exceeded.remainingPenaltyTime- Remaining penalty time if the user is penalized.algorithm- The rate limiting algorithm used.strategy- The rate limiting strategy applied (global, per user, etc.).operationType- The operation type, always 'rateLimit' for this node.timestamp- Timestamp of the rate limit event.
Dependencies
- Redis server for state management
Troubleshooting
- Redis connection failures: Ensure Redis credentials are correct and the Redis server is running and accessible.
- Rate limit always exceeded: Check if the maxRequests and time window parameters are set appropriately.
- Penalty applied unexpectedly: Verify penaltyMultiplier and enableAdaptive settings.
- Node errors on missing input data: Ensure input data is provided to the node.
Links
- Redis Getting Started - Documentation for setting up and using Redis, which is required for this node.
- Redis Security Manual - Guidance on securing Redis connections and credentials.