> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/api-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/api-reference/cn/zlb/overview.md).

# 概述

负载均衡（ZLB）将入站流量分发到多台后端服务器，支持自定义监听器与健康检查。