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upstream backend {
    server backend1;
    server backend2;
    server backend3;
}

server {
    listen 80;
    server_name example.com;
    
    location / {
        proxy_pass http://backend;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }
}

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    server 127.0.0.1:3000;
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}

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sudo service nginx restart
pm2 restart all

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