njs-examples VS lua-nginx-module

this is also extremely helpful when using nginx https://github.com/nginx/njs-examples

I don't know if you can do this directly in nginx config but you can definitely do it with njs. This github repo has some examples of how njs is used to do things during in-flight request: https://github.com/nginx/njs-examples. Also I think the variable you are looking for is $proxy_port (http://nginx.org/en/docs/varindex.html)

Examples on GitHub: https://github.com/nginx/njs-examples/

"small embeddable dynamic languages" are usually used to configure or program other larger compiled applications. This is bes understood by example:

https://create.roblox.com/docs/tutorials/scripting/basic-scr... - make a mini game in Roblox

https://github.com/openresty/lua-nginx-module?tab=readme-ov-... - configure and extend NGINX

https://wezfurlong.org/wezterm/config/lua/general.html - make your terminal more useful (my personal config changes the tab color based on the process name - https://github.com/bbkane/dotfiles/blob/master/wezterm/dot-c...

https://m.youtube.com/watch?v=MQBr9hwf0BY - configure your text editor

If your service is self-hosted, you can build the rate limit rules in Nginx using the OpenResty framework. Note that, if you are using OpenResty, you can use a shared dictionary and you don't necessarily need Redis. However, if you want to use redis though, then you need a redis client like the lua-resty-redis.

You may also wish to open a question on the OpenResty repo, as there are not many OpenResty folks that follow this subreddit.

/u/givmedat - Your best bet is to use njs module or the nginx lua module I think.

I drop logs at the first app LB using openresty's lua plugin for nginx. This goes into my data lake and we work on it from there. Does this work for everyone? No. Does it work for my F500 employer? Yes. Are there better ways to do this? Sorta.

# - https://github.com/openresty/lua-nginx-module/

We want the client to read the YAML file regularly. For this, we can leverage the power of the Lua Nginx module. It's part of OpenResty, which Apache APISIX is built upon. The module offers additional APIs, and two of them are particularly useful:

Depending on how complicated your Python logic is, one option is to use nginx+Lua (https://github.com/openresty/lua-nginx-module). Another option is to extend Envoy (https://www.envoyproxy.io/docs/envoy/latest/extending/extending).