upstream livedataweb_backend_${NGX_LD_HOSTNAME}{
    server ${NGX_LD_HOSTNAME}:12005 max_conns=${NGX_MAX_CONN}; 
    keepalive ${NGX_LD_WEB_UPSTREAM_KEEPALIVE};
}

upstream livedatasio_backend_${NGX_LD_HOSTNAME}{
    server ${NGX_LD_HOSTNAME}:12008 max_conns=${NGX_MAX_CONN}; 
    keepalive ${NGX_LD_SIO_UPSTREAM_KEEPALIVE};
}
