Can you explain the concept of system resilience when its capabilities decrease due to errors?

The concept of system resilience during a reduction in its capabilities is called "Graceful degradation." It assumes that when errors or overloads occur, the system continues to operate but with limited functionality or reduced performance, instead of a complete failure.

In Go, this can be implemented through error handling, timeouts, limiting the number of concurrent requests, and using fallback mechanisms. For example, if a database service is unavailable, the system can switch to a cache or return simplified data to avoid interrupting the user's work.

This approach increases reliability and improves user experience in unstable conditions.