API Gateway Proxy Debugging

Debugging Process

• Gather Information

  Collect all relevant details: error messages, timestamps, request/response logs, and affected endpoints. Document the exact steps to reproduce the issue.

• Check Gateway Status

  Verify gateway health, running services, and resource utilization. Check for recent deployments or configuration changes that might have caused the issue.

• Analyze Logs

  Review application logs, access logs, and error logs. Look for patterns, recurring errors, or anomalies that indicate the root cause.

• Test Connectivity

  Verify network connectivity to backend services. Test DNS resolution, SSL/TLS certificates, and firewall rules. Use telnet or curl to diagnose connection issues.

• Review Configuration

  Examine routing rules, timeout settings, authentication configs, and rate limiting policies. Validate YAML/JSON syntax and ensure correct endpoint mappings.

• Reproduce & Fix

  Create a minimal reproduction case. Apply fixes and verify the solution. Document the issue and resolution for future reference.

Essential Commands

Debugging Checklist

• Verify gateway is running - Check process status and health endpoints
• Confirm network connectivity - Test reachability to backend services
• Validate SSL certificates - Check expiration and chain validity
• Review authentication - Verify API keys and tokens are valid
• Check rate limits - Ensure limits haven't been exceeded
• Examine timeout settings - Verify timeouts are appropriate
• Review routing rules - Confirm correct path mappings
• Check resource usage - Monitor CPU, memory, and network