Rate Limiting

Outline

1. Rate Limiting Basics

• Why rate limiting matters
• Prevent abuse and attacks
• Protect APIs and resources

2. Rule Setup

• Create rules

  • Rule builder
  • Match conditions
  • Threshold settings

• Match conditions

  • URL paths
  • HTTP methods
  • IP addresses
  • Custom expressions

3. Types of Limits

• Request rate limits

  • Per-minute limits
  • Per-hour limits
  • Custom windows

• Concurrent connection limits

  • Concurrent connections
  • Connection duration

4. Actions

• Block

  • Fully block
  • Return status codes

• Challenge

  • CAPTCHA or managed challenge
  • JavaScript challenge

• Log

  • Log-only events
  • Don’t block

5. Common Scenarios

• API protection

  • Protect API endpoints
  • Prevent abuse
  • Manage quotas

• Login protection

  • Stop brute-force attempts
  • Limit login retries

• Form protection

  • Stop spam submissions
  • Comment throttling

6. Advanced Configuration

• Custom responses

  • Error bodies
  • Status codes
  • Headers

• Allow lists

  • IP allow list
  • Bypass rules

• Grouping

  • Group by IP
  • Group by user
  • Custom grouping

7. Monitoring

• View rate limit events
• Metrics and analysis
• Alerts

8. Best Practices

• Set sensible thresholds
• Avoid false positives
• Monitor and tune
• Combine with other security features

9. FAQs

• Limits not taking effect
• False positives
• How to adjust thresholds
• Performance impact

10. Summary

• Where to use rate limiting
• Configuration tips