Server Health Monitor

Integrates tengine's nginx_upstream_check_module, which supports a variety of health checking methods.
SEnginx's health check module is fully compatible with the original configuration, the configurations are documented at: http://tengine.taobao.org/document/http_upstream_check.html

This module is availiable since version 1.5.10.

Besides original features, the health check module integrated in SEnginx supports the fastest and fair load balancing algorithms.