nginx load balancer config

worker_processes 4;
thread_pool default threads=50 max_queue=100000;

events {
  worker_connections 1024;
}

http {

  upstream webapp-service.io {
    server companies-service:3000 weight=10 max_fails=3 fail_timeout=30s;
    server jobs-service:3000 weight=10 max_fails=3 fail_timeout=30s;
    server profiles-service:3000 weight=10 max_fails=3 fail_timeout=30s;
    server users-service:3000 weight=10 max_fails=3 fail_timeout=30s;
  }

  server {
      listen 80;
      listen [::]:80;
      server_name webapp-service.io;

      location / {
        proxy_pass http://webapp-service.io;
        proxy_http_version 1.1;
        proxy_redirect off;
        proxy_buffering off;
        proxy_set_header Host $host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_cache_bypass $http_upgrade;
      }
  }
}