#Global Rate Limiting for Services

#Introduction

Global rate limiting protects services from overload in high-concurrency scenarios by:

• Maintaining request volumes within service capacity
• Preventing resource exhaustion through traffic shaping
• Enabling precise access control via conditional policies

Core value: Ensures service stability while maximizing resource utilization

#Features

• Global and conditional policy modes
• Multi-dimension rule matching (Path/Method/Headers)
• Shadow mode for policy validation
• Real-time monitoring dashboard

#Creating Rate Limiting Policies

#Step 1: Access Policy Interface

1. Navigate: Service List > Target Service
2. Select Rate Limiting tab
3. Click Create Rate Limiting Policy

#Step 2: Policy Type Selection

#Step 3: Configure Policy Rules

Rule Components

Configuration Notes

• Regex matching follows RE2 syntax
• Header matching requires full key:value format
• Multiple rules are AND-combined

#Step 4: Set Rate Threshold

#Rate Limiting Monitoring

#Key Metrics

#Data Interpretation

1. Select policy from dropdown
2. Choose time range (last 1h/24h/7d)
3. Compare allowed vs limited curves
4. Validate policy effectiveness

#Policy Management

• Global-Conditional Relationship: Requests matching either policy type get limited
• Rule Precedence: First-match principle in conditional policies
• Policy Editing: Immediate effect after modification