nginx-upstreams - 如果 nginx 上游多次配置同一个 IP 地址会怎样？

Question

upstream gateway_app {
    server 192.168.0.1:8080;
    server 192.168.0.2:8080;
    server 192.168.0.2:8080;
    server 192.168.0.3:8080;
}

...
location /app/ {
   ...
   proxy_pass http://gateway_app/;
   ...
}

服务器192.168.0.2会导致负载计算失败吗？