nginx · AlexFenlon · Jul 31, 2025
@@ -80,6 +80,7 @@ For more information, view the [VirtualServer and VirtualServerRoute resources](
 |*proxy-buffering* | Enables or disables [buffering of responses](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering) from the proxied server. | *True* |  |
 |*proxy-buffers* | Sets the value of the [proxy_buffers](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffers) directive. | Depends on the platform. |  |
 |*proxy-buffer-size* | Sets the value of the [proxy_buffer_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size) and [grpc_buffer_size](https://nginx.org/en/docs/http/ngx_http_grpc_module.html#grpc_buffer_size) directives. | Depends on the platform. |  |
+|*proxy-busy-buffers-size* | Sets the value of the [proxy_busy_buffers_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_busy_buffers_size) directive. | Depends on the platform. |  |
 |*proxy-max-temp-file-size* | Sets the value of the  [proxy_max_temp_file_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_max_temp_file_size) directive. | *1024m* |  |
 |*set-real-ip-from* | Sets the value of the [set_real_ip_from](https://nginx.org/en/docs/http/ngx_http_realip_module.html#set_real_ip_from) directive. | N/A |  |
 |*real-ip-header* | Sets the value of the [real_ip_header](https://nginx.org/en/docs/http/ngx_http_realip_module.html#real_ip_header) directive. | *X-Real-IP* |  |

@@ -108,6 +108,7 @@ The table below summarizes the available annotations.
 | *nginx.org/proxy-buffering* | *proxy-buffering* | Enables or disables [buffering of responses](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering) from the proxied server. | *True* |  |
 | *nginx.org/proxy-buffers* | *proxy-buffers* | Sets the value of the [proxy_buffers](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffers) directive. | Depends on the platform. |  |
 | *nginx.org/proxy-buffer-size* | *proxy-buffer-size* | Sets the value of the [proxy_buffer_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size) and [grpc_buffer_size](https://nginx.org/en/docs/http/ngx_http_grpc_module.html#grpc_buffer_size) directives. | Depends on the platform. |  |
+| *nginx.org/proxy-busy-buffers-size* | *proxy-busy-buffers-size* | Sets the value of the [proxy_busy_buffers_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_busy_buffers_size) directive. | Depends on the platform. |  |
 | *nginx.org/proxy-max-temp-file-size* | *proxy-max-temp-file-size* | Sets the value of the  [proxy_max_temp_file_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_max_temp_file_size) directive. | *1024m* |  |
 | *nginx.org/server-tokens* | *server-tokens* | Enables or disables the [server_tokens](https://nginx.org/en/docs/http/ngx_http_core_module.html#server_tokens) directive. Additionally, with the NGINX Plus, you can specify a custom string value, including the empty string value, which disables the emission of the “Server” field. | *True* |  |
 | *nginx.org/path-regex* | N/A | Enables regular expression modifiers for Ingress path parameter. This translates to the NGINX [location](https://nginx.org/en/docs/http/ngx_http_core_module.html#location) directive. You can specify one of these values: "case_sensitive", "case_insensitive", or "exact". The annotation is applied to the entire Ingress resource and its paths. While using Master and Minion Ingresses i.e. Mergeable Ingresses, this annotation can be specified on Minion types. The `path-regex` annotation specified on Master is ignored, and has no effect on paths defined on Minions.   | N/A |  [path-regex](https://github.com/nginx/kubernetes-ingress/tree/v{{< nic-version >}}/examples/ingress-resources/path-regex) |

@@ -371,6 +371,7 @@ tls:
 |``buffering`` | Enables buffering of responses from the upstream server. See the [proxy_buffering](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering) directive. The default is set in the ``proxy-buffering`` ConfigMap key. | ``boolean`` | No |
 |``buffers`` | Configures the buffers used for reading a response from the upstream server for a single connection. | [buffers](#upstreambuffers) | No |
 |``buffer-size`` | Sets the size of the buffer used for reading the first part of a response received from the upstream server. See the [proxy_buffer_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size) directive. The default is set in the ``proxy-buffer-size`` ConfigMap key. | ``string`` | No |
+|``busy-buffer-size`` | Sets the size of the buffer used for reading a response from the upstream server when the response is larger than the ``buffer-size``. See the [proxy_busy_buffers_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_busy_buffers_size) directive. The default is set in the ``proxy-busy-buffers-size`` ConfigMap key. | ``string`` | No |
 |``ntlm`` | Allows proxying requests with NTLM Authentication. See the [ntlm](https://nginx.org/en/docs/http/ngx_http_upstream_module.html#ntlm) directive. In order for NTLM authentication to work, it is necessary to enable keepalive connections to upstream servers using the ``keepalive`` field. Note: this feature is supported only in NGINX Plus.| ``boolean`` | No |
 |``type`` |The type of the upstream. Supported values are ``http`` and ``grpc``. The default is ``http``. For gRPC, it is necessary to enable HTTP/2 in the [ConfigMap](/nginx-ingress-controller/configuration/global-configuration/configmap-resource/#listeners) and configure TLS termination in the VirtualServer. | ``string`` | No |
 |``backup`` | The name of the backup service of type [ExternalName](https://kubernetes.io/docs/concepts/services-networking/service/#externalname). This will be used when the primary servers are unavailable. Note: The parameter cannot be used along with the ``random`` , ``hash`` or ``ip_hash`` load balancing methods. | ``string`` | No |

@@ -80,6 +80,7 @@ For more information, view the [VirtualServer and VirtualServerRoute resources](
 |*proxy-buffering* | Enables or disables [buffering of responses](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering) from the proxied server. | *True* |  |
 |*proxy-buffers* | Sets the value of the [proxy_buffers](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffers) directive. | Depends on the platform. |  |
 |*proxy-buffer-size* | Sets the value of the [proxy_buffer_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size) and [grpc_buffer_size](https://nginx.org/en/docs/http/ngx_http_grpc_module.html#grpc_buffer_size) directives. | Depends on the platform. |  |
+|*proxy-busy-buffers-size* | Sets the value of the [proxy_busy_buffers_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_busy_buffers_size) directive. | Depends on the platform. |  |
 |*proxy-max-temp-file-size* | Sets the value of the  [proxy_max_temp_file_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_max_temp_file_size) directive. | *1024m* |  |
 |*set-real-ip-from* | Sets the value of the [set_real_ip_from](https://nginx.org/en/docs/http/ngx_http_realip_module.html#set_real_ip_from) directive. | N/A |  |
 |*real-ip-header* | Sets the value of the [real_ip_header](https://nginx.org/en/docs/http/ngx_http_realip_module.html#real_ip_header) directive. | *X-Real-IP* |  |

@@ -108,6 +108,7 @@ The table below summarizes the available annotations.
 | *nginx.org/proxy-buffering* | *proxy-buffering* | Enables or disables [buffering of responses](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering) from the proxied server. | *True* |  |
 | *nginx.org/proxy-buffers* | *proxy-buffers* | Sets the value of the [proxy_buffers](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffers) directive. | Depends on the platform. |  |
 | *nginx.org/proxy-buffer-size* | *proxy-buffer-size* | Sets the value of the [proxy_buffer_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size) and [grpc_buffer_size](https://nginx.org/en/docs/http/ngx_http_grpc_module.html#grpc_buffer_size) directives. | Depends on the platform. |  |
+| *nginx.org/proxy-busy-buffers-size* | *proxy-busy-buffers-size* | Sets the value of the [proxy_busy_buffers_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_busy_buffers_size) directive. | Depends on the platform. |  |
 | *nginx.org/proxy-max-temp-file-size* | *proxy-max-temp-file-size* | Sets the value of the  [proxy_max_temp_file_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_max_temp_file_size) directive. | *1024m* |  |
 | *nginx.org/server-tokens* | *server-tokens* | Enables or disables the [server_tokens](https://nginx.org/en/docs/http/ngx_http_core_module.html#server_tokens) directive. Additionally, with the NGINX Plus, you can specify a custom string value, including the empty string value, which disables the emission of the “Server” field. | *True* |  |
 | *nginx.org/path-regex* | N/A | Enables regular expression modifiers for Ingress path parameter. This translates to the NGINX [location](https://nginx.org/en/docs/http/ngx_http_core_module.html#location) directive. You can specify one of these values: "case_sensitive", "case_insensitive", or "exact". The annotation is applied to the entire Ingress resource and its paths. While using Master and Minion Ingresses i.e. Mergeable Ingresses, this annotation can be specified on Minion types. The `path-regex` annotation specified on Master is ignored, and has no effect on paths defined on Minions.   | N/A |  [path-regex](https://github.com/nginx/kubernetes-ingress/tree/v{{< nic-version >}}/examples/ingress-resources/path-regex) |

@@ -371,6 +371,7 @@ tls:
 |``buffering`` | Enables buffering of responses from the upstream server. See the [proxy_buffering](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering) directive. The default is set in the ``proxy-buffering`` ConfigMap key. | ``boolean`` | No |
 |``buffers`` | Configures the buffers used for reading a response from the upstream server for a single connection. | [buffers](#upstreambuffers) | No |
 |``buffer-size`` | Sets the size of the buffer used for reading the first part of a response received from the upstream server. See the [proxy_buffer_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size) directive. The default is set in the ``proxy-buffer-size`` ConfigMap key. | ``string`` | No |
+|``busy-buffers-size`` | Sets the size of the buffer used for reading a response from the upstream server when the response is larger than the ``buffer-size``. See the [proxy_busy_buffers_size](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_busy_buffers_size) directive. The default is set in the ``proxy-busy-buffers-size`` ConfigMap key. | ``string`` | No |
 |``ntlm`` | Allows proxying requests with NTLM Authentication. See the [ntlm](https://nginx.org/en/docs/http/ngx_http_upstream_module.html#ntlm) directive. In order for NTLM authentication to work, it is necessary to enable keepalive connections to upstream servers using the ``keepalive`` field. Note: this feature is supported only in NGINX Plus.| ``boolean`` | No |
 |``type`` |The type of the upstream. Supported values are ``http`` and ``grpc``. The default is ``http``. For gRPC, it is necessary to enable HTTP/2 in the [ConfigMap]({{< ref "/nic/configuration/global-configuration/configmap-resource.md#listeners" >}}) and configure TLS termination in the VirtualServer. | ``string`` | No |
 |``backup`` | The name of the backup service of type [ExternalName](https://kubernetes.io/docs/concepts/services-networking/service/#externalname). This will be used when the primary servers are unavailable. Note: The parameter cannot be used along with the ``random`` , ``hash`` or ``ip_hash`` load balancing methods. | ``string`` | No |

@@ -464,6 +464,7 @@ This table maps the Ingress-NGINX Controller annotations to NGINX Ingress Contro
 | [_nginx.ingress.kubernetes.io/proxy-buffering_](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#proxy-buffering) | [_nginx.org/proxy-buffering_]({{< ref "/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md#general-customization" >}}) | [_proxy_buffering_](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffering) |
 | [_nginx.ingress.kubernetes.io/proxy-buffers-number_](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#proxy-buffers-number) | [_nginx.org/proxy-buffers_]({{< ref "/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md#general-customization" >}}) | [_proxy_buffers_](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffers) |
 | [_nginx.ingress.kubernetes.io/proxy-buffer-size_](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#proxy-buffer-size) | [_nginx.org/proxy-buffer-size_]({{< ref "/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md#general-customization" >}}) | [_proxy_buffer_size_](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size) |
+| [_nginx.ingress.kubernetes.io/proxy-busy-buffers-size_](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#proxy-busy-buffers-size) | [_nginx.org/proxy-busy-buffers-size_]({{< ref "/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md#general-customization" >}}) | [_proxy_busy_buffers_size_](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_busy_buffers_size) |
 | [_nginx.ingress.kubernetes.io/proxy-connect-timeout_](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#custom-timeouts) | [_nginx.org/proxy-connect-timeout_]({{< ref "/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md#general-customization" >}}) | [_proxy_connect_timeout_](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_connect_timeout) |
 | [_nginx.ingress.kubernetes.io/proxy-read-timeout_](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#custom-timeouts) | [_nginx.org/proxy-read-timeout_]({{< ref "/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md#general-customization" >}}) | [_proxy_read_timeout_](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_read_timeout) |
 | [_nginx.ingress.kubernetes.io/proxy-send-timeout_](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#custom-timeouts) | [_nginx.org/proxy-send-timeout_]({{< ref "/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md#general-customization" >}}) | [_proxy_send_timeout_](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_send_timeout) |