Diagnosing and resolving UPark API Error 500 issues potentially related to database backups and transaction processing in commercial kiosk environments.
CPU usage, RAM usage, disk I/O, network bandwidth.
Check CDN configuration for cache TTL and invalidation policies.
Retry mechanisms, logging, user notifications.
HTTP 500 errors indicate a server-side problem. API calls rely on TLS/SSL for secure communication. An overloaded server CPU, disk I/O bottlenecks during backups, or temporary network disruptions can trigger this. Inadequate API response handling and JSON parsing within the kiosk software can also present as an 500. The CDN and DNS propagation delays can cause intermittent resolution failures. JWT token expiration and validation failures can cause authentication failures.
Ensure the kiosk software is properly secured against unauthorized access and modification. Regular security audits and penetration testing are recommended. Although direct physical interaction is minimal, ensure kiosk placement considers environmental factors such as extreme temperatures that can impact component performance.
Schedule database backups during off-peak hours to minimize impact on API performance. Regularly review server resource utilization and scale resources as needed. Implement robust API error handling and monitoring. Configure CDN settings for optimal caching. Implement JWT token monitoring and alerting for near-expiration or invalid tokens.
Use a network traffic analyzer (e.g., Wireshark on a test system, not on the public kiosk) to capture API requests and responses to pinpoint the exact cause of the 500 error. Pay close attention to the timing of the error relative to the database backup process. Check DNS resolution of the API endpoint from the kiosk periodically.