从 9万 QPS 到 6千：一次压测暴露的 15 倍性能黑洞，我们如何用 OpenResty XRay 定位根因
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Nginx Devel Kit
Yichun Zhang , 21 Jun 2011 (created 21 Jun 2011)The NDK is an Nginx module that is designed to extend the core functionality of the excellent Nginx webserver in a way that can be used as a basis of other Nginx modules.
Project page: https://github.com/simpl/ngx_devel_kit
