proxy pass in nginx code example

Example 1: nginx proxy pass

location /path/to/service/ {
  proxy_pass http://127.0.0.1:8081/;
  proxy_http_version 1.1;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection 'upgrade';
  proxy_set_header Host $host;
  proxy_cache_bypass $http_upgrade;
}

Example 2: pass proxy nginx

location ~ \.php {
    proxy_pass http://127.0.0.1:8000;
}

Example 3: nginx proxy_pass

location /some/path/ {
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_pass http://localhost:8000;
}