api

upstream loadbalancer {
        server localhost:3000;
        server localhost:3001;
}

server {
    listen 80;
    listen [::]:80;
    server_name api.example.com;
    return 302 https://$server_name$request_uri;
}

server {

    # SSL configuration

    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    ssl_certificate         /etc/ssl/cert.pem;
    ssl_certificate_key     /etc/ssl/key.pem;

    server_name api.example.com;

     # Enable gzip compression only for application/json
    gzip off;
    gzip_types application/json;
    gzip_proxied any;
    gzip_min_length 1000;
    gzip_vary on;

    location / {
        proxy_pass http://loadbalancer;
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Host $http_host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_pass_request_headers on;
    }
}