Module ngx_http_mirror_module

The ngx_http_mirror_module module (1.13.4) implements mirroring of an original request by creating background mirror subrequests. Responses to mirror subrequests are ignored.

location / {
    mirror /mirror;
    proxy_pass http://backend;
}

location = /mirror {
    internal;
    proxy_pass http://test_backend$request_uri;
}

mirror off;

Sets the URI to which an original request will be mirrored. Several mirrors can be specified on the same level.

mirror_request_body on;

Indicates whether the client request body is mirrored. When enabled, the client request body will be read prior to creating mirror subrequests. In this case, unbuffered client request body proxying set by the proxy_request_buffering, fastcgi_request_buffering, scgi_request_buffering, and uwsgi_request_buffering directives will be disabled.

location / {
    mirror /mirror;
    mirror_request_body off;
    proxy_pass http://backend;
}

location = /mirror {
    internal;
    proxy_pass http://log_backend;
    proxy_pass_request_body off;
    proxy_set_header Content-Length "";
    proxy_set_header X-Original-URI $request_uri;
}