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http {
    upstream myapp {
        server backend1.example.com;
        server backend2.example.com;
        server backend3.example.com;
    }
    
    server {
        listen 80;
        
        location / {
            proxy_pass http://myapp;
        }
    }
}

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upstream myapp {
  server backend1.example.com;
  server backend2.example.com;
  server backend3.example.com;
}

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  ip_hash;
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  server backend2.example.com;
  server backend3.example.com;
}

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upstream myapp {
  least_conn;
  server backend1.example.com;
  server backend2.example.com;
  server backend3.example.com;
}

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http {
    upstream myapp {
        server backend1.example.com:8000;
        server backend2.example.com:8000;
        server backend3.example.com:8000;
    }
    
    server {
        listen 80;
        
        location / {
            proxy_pass http://myapp;
        }
    }
}

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