UCDN 内容分发网络 | Content Delivery Network (UCDN) Print

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中文(UCDN 内容分发网络)

UCDN 通过全球/区域边缘节点缓存与就近访问,加速静态资源与下载分发,降低源站压力并提升用户访问体验。

适用场景

  • 网站静态资源加速(JS/CSS/图片)
  • 软件下载、安装包分发
  • 直播/点播内容分发(视产品支持)

核心能力(以实际产品为准)

  • 边缘缓存与回源策略
  • HTTPS/证书配置(可配合 USSL)
  • 防盗链、访问控制(Referer/URL 签名等如支持)
  • 带宽/请求量统计与日志分析(可配合 ULog/UES)

举例:加速一个图片站

  1. 源站:img.example.com 指向你的对象存储/源站服务器
  2. 在 UCDN 创建加速域名:cdn.example.com
  3. 将网站图片 URL 替换为 https://cdn.example.com/xxx.jpg
  4. 设置缓存规则:图片缓存 7 天,HTML 缓存 0(或短缓存)

最佳实践

  • 对动态内容谨慎缓存,避免数据不一致
  • 合理设置缓存 TTL,并对版本化静态资源(带 hash)做长缓存

English (UCDN)

UCDN accelerates content delivery using edge caching and nearby access, improving user experience and reducing origin load.

Use cases

  • Static website acceleration (JS/CSS/images)
  • Software download distribution
  • Streaming/VOD delivery (depending on support)

Key capabilities (depending on offering)

  • Edge caching and origin fetch policies
  • HTTPS and certificate configuration (with USSL)
  • Anti-leech and access controls (if supported)
  • Traffic/request analytics and logs (with ULog/UES)

Example: Accelerate an image site

  1. Origin: img.example.com points to your storage/origin server
  2. Create a CDN domain: cdn.example.com
  3. Update image URLs to https://cdn.example.com/xxx.jpg
  4. Set caching rules: images 7 days; HTML short/no cache

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