We've extended the Sidecar service to expose metrics, including:

• Total number of initialization errors
• Total number of invalid API key errors
• Total number of network errors
• Total number of persistent cache hits
• Total number of persistent cache misses
• Total number of persistent cache errors

The metrics are helpful for monitoring the health and performance of the Sidecar service, and can be visualized in any Prometheus-compatible observability (such as Graphana).

The metrics are available in the Sidecar docker image v2.401.4 or later. 

More details can be found here.