Nginx 버퍼 관련 메모
- http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size
- http://nginx.org/en/docs/http/ngx_http_core_module.html#client_body_buffer_size
- https://www.getpagespeed.com/server-setup/nginx/tuning-proxy_buffer_size-in-nginx
- https://stackoverflow.com/questions/33460569/nginx-proxy-buffering-changing-buffers-number-vs-size
- https://www.digitalocean.com/community/tutorials/how-to-optimize-nginx-configuration
- https://stackoverflow.com/questions/54937220/meaning-of-max-size-of-nginx-large-client-header-buffers-directive
- https://stackoverflow.com/questions/33460569/nginx-proxy-buffering-changing-buffers-number-vs-size
- https://unix.stackexchange.com/questions/605467/how-to-handle-a-too-large-cookie-causing-nginx-to-return-a-502
