NGINX Proxy Buffer Configuration

[mpstefan]

As a user of NGF
I want to configure NGINX's proxy buffer configuration for my applications
So that when any part of my request exceeds the needed proxy buffer I can increase the limit to support my traffic.

Acceptance

• NGINX directives:

  • proxy_buffer_size
  • proxy_buffers
  • proxy_buffering
  • proxy_busy_buffers_size

• The NGINX Extensions design is reviewed to implement the above directives.

• The above directives are configurable via a ProxySettingsPolicy for the scope it is applied at.

• The ProxySettingsPolicy can be attached to a Gateway or Route.

Feedback

• Needed for being able to configure proxy settings for a specific HTTPRoute #2111

[mpstefan]

Are there any additional directives we want to look at to include in proxy buffer configuration?
What policy should proxy buffer configuration be a part of?

[github-actions]

This issue is stale because it has been open 14 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[pleshakov]

From NGINX community slack https://nginxcommunity.slack.com/archives/C03SXACMUBE/p1708990162329589 ,
there is also a related large_client_header_buffers directive -- https://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers