🔨 网站性能优化的黄金法则

https://developer.yahoo.com/performance/rules.html

Content (10)

  • Make Fewer HTTP Requests
  • Reduce DNS Lookups
  • Avoid Redirects
  • Make Ajax Cacheable
  • Postload Components
  • Preload Components
  • Reduce the Number of DOM Elements
  • Split Components Across Domains
  • Minimize Number of iframes
  • Avoid 404s

Server (7)

  • Use a Content Delivery Network (CDN)
  • Add Expires or Cache-Control Header
  • Gzip Components
  • Configure ETags
  • Flush Buffer Early
  • Use GET for Ajax Requests
  • Avoid Empty Image src
  • Reduce Cookie Size
  • Use Cookie-Free Domains for Components

CSS (4)

  • Put Stylesheets at Top
  • Avoid CSS Expressions
  • Choose <link> Over @import
  • Avoid Filters

JavaScript (6)

  • Put Scripts at Bottom
  • Make JavaScript and CSS External
  • Minify JavaScript and CSS
  • Remove Duplicate Scripts
  • Minimize DOM Access
  • Develop Smart Event Handlers

Images (4)

  • Optimize Images
  • Optimize CSS Sprites
  • Do Not Scale Images in HTML
  • Make favicon.ico Small and Cacheable

Mobile (2)

  • Keep Components Under 25 KB
  • Pack Components Into a Multipart Document