server {
    listen 80;
    server_name _;
    root /usr/share/nginx/html;
    index index.html;

    # 404 fallback
    error_page 404 /404.html;

    # Static assets caching
    location /_astro/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # Redirect old article URLs (/articles/YYYY/MM/DD/slug/ -> /articles/YYYY-MM-DD-slug/)
    location ~ "^/articles/(\d\d\d\d)/(\d\d)/(\d\d)/([^/]+)/?$" {
        return 301 /articles/$1-$2-$3-$4/;
    }

    # Redirect old atom feed
    location = /atom.xml {
        return 301 /rss.xml;
    }
}