Antispam Commands

📦 Antispam Commands

The antispam module provides automatic, behind-the-scenes spam protection for your groups.

Unlike other modules, it operates automatically without requiring any user commands.

How It Works: Per-user-per-chat rate limiting prevents spam automatically.

• Rate Limit: 18 messages per second per user per chat
• Automatic: No configuration required - works out of the box
• Transparent: Silently drops excessive messages without disrupting normal users
• Per-User Tracking: Busy groups with many legitimate users won’t trigger false positives

Technical Details

Rate Limiting Algorithm: The module uses a sliding window approach:

1. First Message: Starts tracking with count = 1
2. Subsequent Messages: Increments counter within the time window
3. Window Expiry: Counter resets when the time window (1 second) expires
4. Threshold Exceeded: Messages beyond 18/second are silently dropped

Memory Management:

• Automatic cleanup: Expired tracking entries are removed every 5 minutes
• No memory leaks: Background goroutine prevents unbounded memory growth
• Efficient storage: Only active users are tracked

Technical Notes

Limitations

• No User Commands: Cannot be enabled/disabled per chat
• Fixed Threshold: 18 messages/second is hardcoded
• No Logging to Chat: Spam events are only logged server-side

Use Antispam for automatic background protection and Antiflood for configurable flood control.