SEO
Cloudflare
全球 CDN + DNS 管理平台，加速静态站点访问速度，也提供免费 SSL 证书。
主要用途
Cloudflare is a content delivery network (CDN), security, and performance platform that proxies web traffic through its global edge network. For SEO, the primary value is speed: static assets (images, CSS, JavaScript) are cached at edge nodes close to each visitor, reducing server response times and improving Core Web Vitals scores — particularly LCP (Largest Contentful Paint) and TTFB (Time to First Byte). The free plan includes DDoS protection, SSL certificates, bot filtering, and basic caching rules. Higher-tier plans add image optimization (Polish, Mirage), Workers for edge-side code execution, and advanced cache rules that let teams serve highly dynamic pages at near-static speed.
所在链路
Cloudflare sits at the technical infrastructure layer — it is configured once and runs automatically, improving performance and security without ongoing content or SEO work.
核心功能
- Global CDN with 300+ PoPs caching static assets close to each visitor
- Free automatic SSL/TLS certificate provisioning and renewal
- DDoS protection and Web Application Firewall (WAF) against bot traffic
- Core Web Vitals impact via reduced TTFB and improved LCP on cached assets
- Image optimization (Polish) converting images to WebP automatically
- Page Rules and Cache Rules for fine-grained cache control per URL pattern
适合谁用
- Site owners wanting meaningful Core Web Vitals improvements without changing their hosting setup
- Publishers on shared hosting whose servers struggle under traffic spikes, causing slow TTFB that hurts rankings
- E-commerce and SaaS sites needing both performance and protection from bot and DDoS attacks
新手提示
- Changing nameservers to Cloudflare is required to use the proxy; this is a DNS change, not a hosting migration — the site stays where it is.
- Aggressive caching can serve stale pages after a site update; configure Cache Rules to bypass caching on admin URLs and use the Purge Cache function after content publishes.
- The free plan handles the performance and security needs of most small to medium sites; paid plans are mainly valuable when you need the WAF, Workers, or advanced image optimization.