我看到 别人的 windows php有这样的配置 . 请问这样有什么好处吗 ?

http {

upstream php_processes {
    server 127.0.0.1:9001 weight=1;
    server 127.0.0.1:9002 weight=1;
}


server {

        ## Regular PHP processing.
        location ~ \.php$ {
            try_files  $uri =404;
            fastcgi_pass   php_processes;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
            include        fastcgi_params;
        }

}


}

当然省略了好多 ... 好像是为了 php 多进程

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