nginx.conf

events {
    worker_connections 1024;
}

http {
    # Define cache path and settings
    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=static_cache:10m max_size=100m inactive=60m use_temp_path=off;
    
    upstream app_backend {
        server app:3000;
    }

    server {
        listen 3000;
        
        location /static {
            # Enable server-side caching
            proxy_cache static_cache;
            proxy_cache_valid 200 301 302 404 500 502 503 504 1m;
            proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
            proxy_cache_lock on;
            proxy_cache_key "$scheme$request_method$host$request_uri";
            
            # Force caching by ignoring cache headers from backend
            proxy_ignore_headers Cache-Control Expires Set-Cookie;
            proxy_cache_bypass $http_cache_control $http_pragma;
            
            # Add cache status header for debugging
            add_header X-Cache-Status $upstream_cache_status;

            proxy_pass http://app_backend;
            proxy_set_header Host $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;
        }

        location / {
            proxy_pass http://app_backend;
            proxy_set_header Host $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;
        }
    }
}