Suggest an alternative to

ngx_healthcheck_module

nginx module for upstream servers health check. support stream and http upstream. 该模块可以为Nginx提供主动式后端服务器健康检查的功能（同时支持四层和七层后端服务器的健康检测）

Why do you think that https://github.com/baidu/dperf is a good alternative to ngx_healthcheck_module

A URL to the alternative repo (e.g. GitHub, GitLab)

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