Health checking

• If health checking is configured for a cluster, additional statistics are emitted. They are documented .
• v2 API documentation.

This section is written for the v1 API but the concepts also apply to the v2 API. It will be rewritten to target the v2 API in a future release.

During each health check cycle, all of the “send” bytes are sent to the target server. Each binary block can be of arbitrary length and is just concatenated together when sent. (Separating into multiple blocks can be useful for readability).

Health checks that require a more complex pattern such as send/receive/send/receive are not currently possible.