server {
    listen 80;
    server_name _;

    # 前端静态文件
    location / {
        root /usr/share/nginx/html;
        index index.html;
        try_files $uri $uri/ /index.html;
    }

    # 精确匹配 index.html，禁用缓存
    location = /index.html {
        root /usr/share/nginx/html;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # 静态资源开启长缓存（带 hash）
    location ~* \.(js|css|woff2|json|svg|png|jpg|jpeg|gif|ico|ttf|otf|eot|mp4|webm|webp)$ {
        root /usr/share/nginx/html;
        add_header Cache-Control "public, max-age=31536000, immutable";
        access_log off;
    }
}