Troubleshooting Guide - pratchaya-maneechot/service-exchange GitHub Wiki

Symptoms:

• HTTP 503 Service Unavailable
• Connection timeouts
• Circuit breaker open

Diagnosis:

1. Check service health endpoints
2. Verify network connectivity
3. Check circuit breaker status
4. Review error logs

Solutions:

• Restart affected services
• Scale up healthy replicas
• Reset circuit breakers
• Check DNS resolution

Symptoms:

• Connection pool exhausted
• Database timeout errors
• Slow query performance

Diagnosis:

1. Monitor connection pool metrics
2. Check database performance metrics
3. Review slow query logs
4. Verify database resources

Solutions:

• Increase connection pool size
• Optimize database queries
• Scale database resources
• Add read replicas

Symptoms:

• Increasing queue depth
• Message processing delays
• Consumer lag growing

Diagnosis:

1. Check queue depth metrics
2. Monitor consumer performance
3. Review error logs
4. Check resource utilization

Solutions:

• Scale up consumers
• Optimize message processing
• Increase partition count
• Review message routing

Investigation Steps:

1. Check application metrics
2. Review database query performance
3. Analyze network latency
4. Check resource utilization

Optimization Strategies:

• Add caching layers
• Optimize database queries
• Implement connection pooling
• Use CDN for static content

Detection:

• Monitor memory usage trends
• Heap dump analysis
• Garbage collection metrics

Resolution:

• Identify memory leak sources
• Fix object references
• Optimize garbage collection
• Restart services if necessary