Understanding System Errors
Diagnostics, classification, and resolution techniques for common system and network errors.
1. Common Error Categories
Application Errors
Failed API calls, invalid parameters, processing failures
400 Bad Request - Malformed JSON
System Errors
Database connection issues, server overloads, dependency failures
503 Service Unavailable
2. Diagnosis Techniques
Log Analysis
Error[12345]: Failed to establish connection to redis://127.0.0.1:6379
Stack Trace:
- ConnectionHandler::connect (line 243)
- ApiService::initialize (line 89)
Status Monitoring
HTTP/1.1 500 Internal Server Error
Content-Type: application/problem+json
{
"status": 500,
"title": "Critical System Failure",
"instance": "/critical-endpoint"
}
3. Resolution Strategies
Retry Handling
{
"attempts": 3,
"strategy": "exponential_backoff",
"timeout": "1000ms"
}
Circuit Breaker
{
"threshold": 50,
"tripped": true,
"reset_after": "30s"
}
4. Error Lifecycle
Error Propagation
Client
Error
Server:
500Log
Mitigation Path
Trigger retry (3 attempts)
Activate backup service
Send alert to monitoring
Fallback response