Have you worked with Nginx? What load balancing methods do you know?

Yes, I have experience working with Nginx as a web server and reverse proxy, including load balancing. The main load balancing methods in Nginx:

• Round Robin — requests are evenly distributed across servers.
• Least Connections — requests are directed to the server with the fewest active connections.
• IP Hash — requests from the same client IP are always directed to the same server, which is useful for sessions.

Example configuration with least connections load balancing:

upstream backend {
    least_conn;
    server backend1.example.com;
    server backend2.example.com;
}

server {
    location / {
        proxy_pass http://backend;
    }
}