Caching Configuration in Nginx

# Browser caching for static files
location ~* \.(jpg|jpeg|png|css|js)$ {
    expires 30d;
    add_header Cache-Control "public, immutable";
}

# Proxy cache
proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=my_cache:10m max_size=1g;

server {
    location / {
        proxy_cache my_cache;
        proxy_cache_valid 200 1h;
        proxy_pass http://backend;
    }
}