下面这个第一个location是把http://localhost:1337/gek/转给node处理
那下面第二个location是干吗的，是处理后端传过来的接口吗？
不太明白!!!

server {    listen   80;    server_name gek.show.com;     location / {         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;         proxy_set_header X-Real-IP $remote_addr;         proxy_set_header Host $http_host;         proxy_pass   http://localhost:1337/gek/;     }      location ~ ^/okc/rest{         proxy_store off;         proxy_redirect off;         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;         proxy_set_header X-Real-IP $remote_addr;         proxy_connect_timeout 600;         proxy_read_timeout 600;         proxy_send_timeout 600;         proxy_set_header Host "gek.show.com";          #proxy_pass http://gek.show.com;         proxy_pass http://gek.show.com:8080;     } }