perf: ⚡️ pass in the ability to configure proxy-buffering (#85)

* perf: ⚡️ pass in the ability to configure `proxy-buffering`

* fixup! perf: ⚡️ pass in the ability to configure `proxy-buffering`

* terraform-docs: automated action

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

README.md

@@ -74,6 +74,7 @@ No modules.
 | <a name="input_memory_limits"></a> [memory\_limits](#input\_memory\_limits) | value for resources:limits memory value | `string` | `"2Gi"` | no |
 | <a name="input_memory_requests"></a> [memory\_requests](#input\_memory\_requests) | value for resources:requests memory value | `string` | `"512Mi"` | no |
 | <a name="input_opensearch_modsec_audit_host"></a> [opensearch\_modsec\_audit\_host](#input\_opensearch\_modsec\_audit\_host) | domain endpoint for the opensearch cluster | `string` | `""` | no |
+| <a name="input_proxy_response_buffering"></a> [proxy\_response\_buffering](#input\_proxy\_response\_buffering) | nginx receives a response from the proxied server as soon as possible, saving it into the buffers set by the proxy\_buffer\_size and proxy\_buffers directives. If the whole response does not fit into memory, a part of it can be saved to a temporary file on the disk. https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering | `string` | `"off"` | no |
 | <a name="input_replica_count"></a> [replica\_count](#input\_replica\_count) | Number of replicas set in deployment | `string` | n/a | yes |
 
 ## Outputs

main.tf

@@ -60,6 +60,7 @@ resource "helm_release" "nginx_ingress" {
     enable_latest_tls              = var.enable_latest_tls
     enable_owasp                   = var.enable_owasp
     keepalive                      = var.keepalive
+    proxy_response_buffering       = var.proxy_response_buffering
     default                        = var.controller_name == "default" ? true : false
     name_override                  = "ingress-${var.controller_name}"
     memory_requests                = var.memory_requests

templates/values.yaml.tpl

@@ -168,6 +168,7 @@ controller:
     proxy-buffer-size: "16k"
     proxy-body-size: "50m"
     keepalive: ${keepalive}
+    proxy-buffering: ${proxy_response_buffering}
 
 %{ if enable_latest_tls }
     ssl-protocols: "TLSv1.2 TLSv1.3"

variables.tf

@@ -74,6 +74,11 @@ variable "keepalive" {
   default     = 320
 }
 
+variable "proxy_response_buffering" {
+  description = "nginx receives a response from the proxied server as soon as possible, saving it into the buffers set by the proxy_buffer_size and proxy_buffers directives. If the whole response does not fit into memory, a part of it can be saved to a temporary file on the disk. https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering"
+  type        = string
+  default     = "off"
+}
 
 variable "memory_limits" {
   description = "value for resources:limits memory value"