Troubleshooting expired parking meter notification issues in a generic parking app. Focus on API, TLS/SSL certificates, and software configuration.
Check the server logs and monitoring dashboards for performance bottlenecks.
Roll back to a previous version to see if the issue persists.
Check the network connectivity and DNS resolution on the device.
Notification delivery relies on API calls to a backend server. Issues can arise from invalid TLS/SSL certificates, leading to failed API requests. Incorrect JSON parsing of the API response can also result in the application misinterpreting the meter's expiration status. Cache invalidation problems, either on the client or server side, may present stale data. DNS resolution failures preventing the app from reaching the notification server. Token expiry or invalidation for user authentication.
The parking app displays an 'Parking Meter Expired' notification despite potential active parking session. The notification system appears to be malfunctioning, failing to accurately reflect the parking meter status.
Ensure the kiosk is unplugged from the power source before performing any software maintenance. The device should be placed on a dry, non-conductive surface. The kiosk location is exposed to the public in an unattended environment and must be protected from vandalism and extreme weather conditions (temperature fluctuations from -40C to above freezing).
Implement robust error handling and logging within the app to capture and report any API errors or exceptions. Regularly update the app to address any known bugs or security vulnerabilities. Ensure the server infrastructure has redundancy and monitoring to prevent downtime. Implement proper cache invalidation strategies to prevent stale data from being displayed. Use short-lived authentication tokens and implement a token refresh mechanism.
Use a network packet capture tool (if available and permissible) to inspect the API requests and responses between the app and the server. This can help identify the exact cause of the error (e.g., invalid certificate, incorrect JSON format, API error codes). Look for any HTTP 4xx or 5xx errors in the responses. Check for a recent API version change that might be impacting the app’s parsing behaviour.