jas0n99 / ngx_force_gunzip Goto Github PK

Quoting some README stuff:

This is a simple patch modifying the NGINX gunzip filter module to force inflate compressed responses.

The gunzip module deflates responses, not inflates. I think you got the wording wrong from the author, who is, AFAIK, a Chinese native speaker.

It greatly reduces network bandwidth between nginx and upstream server(s).

How? It doesn't say, but I guess you have to enforce compression by always sending Accept-Encoding: gzip to the upstream, e.g. proxy_set_header Accept-Encoding "gzip";. There is no mention of that in the README at all. Instead, there's a suggestion to comment/remove proxy_set_header Accept-Encoding "";. With this commented, the result would be that some requests are (depending on the client's Accept-Encoding) will be compressed by the upstream, and some not.

I set my upstream server to use gzip level 1 to maximize speed since nginx will recompress the content (typically with brotli).

Something like this would allow unbrotli upstream requests and you wouldn't have to do double compression. (wouldn't work with this patch, I guess).