Company
Date Published
Author
Nishant Bhatia - Cloud Architect, and Rob Hadaway, Sr. Solutions Architect
Word count
1224
Language
English
Hacker News points
None

Summary

The code provides a Python-based solution to monitor the health of app service servers and automatically fail over to a secondary server if needed. It uses HTTP health checks and WebSocket connection endpoints to ensure continuous connectivity. The solution separates health check URLs from connection endpoints, allowing for independent monitoring while maintaining a stable connection endpoint. A background thread runs the `health_check_worker` function, which continuously monitors the primary server's health every 3 seconds and attempts to switch to the secondary server if it fails for more than 9 consecutive times. Detailed logging provides insights into the health check process, aiding in troubleshooting and monitoring. The code can be adapted to various programming languages and integrated into mobile apps or backend services to improve uptime and resilience.