Why Websites Are Slow

Page load process: DNS resolution (10-200ms), TCP connection (10-100ms), server processing, data transfer, browser rendering. Any step can be bottleneck.

Solution 1 CDN Acceleration

Principle: cache static resources (images/CSS/JS/fonts/video) on edge nodes nationwide/globally. Users fetch from nearest node instead of origin each time. Effect: static resource loading 50-80% faster. Reduces origin pressure significantly. Cost: Aliyun/Tencent Cloud CDN free tier (tens GB/month). Overage ~0.24 RMB/GB. SME monthly: tens to hundreds RMB.

A bamboo e-commerce site in 益阳: before CDN homepage loaded in 4.2s (images took 3s). After CDN: 1.5s. Bounce rate dropped 23%, conversion up 15%.

Solution 2 Code Optimization

This is most fundamental yet overlooked approach. Frontend: compress/merge CSS/JS, lazy load images, reduce HTTP requests, optimize critical rendering path. Backend: DB index optimization, SQL tuning, Redis caching (hot data in memory), API response under 200ms. Architecture: read-write separation, message queue async, microservice split.

In one project, pure code optimization reduced page load from 5s to 1.8s. Methods: compressed frontend resources (-60% volume), added Redis cache to hot APIs (350ms to 25ms), optimized one slow SQL (8s to 0.03s).

Combination Strategy

Best practice: CDN for static resources plus code optimization plus full-site acceleration for dynamic content chain latency. Three layers combined beats any single approach.