предоставляющие свою базу по API
upstream backend {
server 1.1.1.1:80;
server 2.2.2.2:80;
server 3.3.3.3:80;
server 4.4.4.4:80;
server 5.5.5.5:80;
server 6.6.6.6:80;
}
location / {
proxy_pass http://backend;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Real-IP $remote_addr;
proxy_next_upstream error timeout http_404;
}