I guess that signals it's time for nginx users to check out possible alternatives - just in case, if things turn out for the worse.
I can recommend having a look at https://varnish-cache.org/ - while its performance might not be 100% up to par with nginx in some (very, very high-end) scenarios, it has many other fortes that nginx (at least in its FOSS release version; I've never used nginx plus) just cannot match in my experience. Having seen `varnishlog` and `varnishtest` in action alone are worth spending a day or two exploring it.
I can recommend having a look at https://varnish-cache.org/ - while its performance might not be 100% up to par with nginx in some (very, very high-end) scenarios, it has many other fortes that nginx (at least in its FOSS release version; I've never used nginx plus) just cannot match in my experience. Having seen `varnishlog` and `varnishtest` in action alone are worth spending a day or two exploring it.