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利用CDN服務(wù)可以將靜態(tài)文件存儲(chǔ)在多個(gè)不同的位置,使用雅克布圖片可以減少web頁(yè)面上所占流量大小。
網(wǎng)站W(wǎng)eb端訪問(wèn)性能提升技巧總結(jié)
1. 利用CDN加速:利用CDN服務(wù)可以將靜態(tài)文件存儲(chǔ)在多個(gè)不同的位置,當(dāng)用戶訪問(wèn)時(shí),會(huì)選擇最近的服務(wù)器來(lái)請(qǐng)求數(shù)據(jù)。這樣就可以大大減少了客戶端與服務(wù)器之間的距離,使得web頁(yè)面的訪問(wèn)速度顯著提升。

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2. 雅克布圖片優(yōu)化:雅克布圖片是一種新型的圖片格式,它可以將原始圖片中冗余信息剔除并把剩余部分重新打包成一張尺寸相對(duì)而言要小很多的圖片。使用雅克布圖片可以減少web頁(yè)面上所占流量大小,也能夠明顯地減少web頁(yè)面打開(kāi)時(shí)間。
3. 精心命名CSS/JS文件: CSS/JS 文件如果命名不當(dāng)會(huì)造成浪費(fèi)流量, 因此要注意CSS/JS 文件命名應(yīng)該遵循“方便理解、容易識(shí)別”原則, 還要注意版本號(hào), 針對(duì)不同版本應(yīng)該使用不同的文件名;
4. 壓縮HTML代碼: HTML代碼中存在大量冗余信息, 要想出好 web 頁(yè)面性能, 有必要將 HTML 代碼進(jìn)行壓縮;
5. 精心選擇JavaScript庫(kù): JavaScript 庫(kù)是 web 界難兄難弟之一, 雖然沒(méi)人想看 JavaScript 源代碼(亂七八遭), 但是 JavaScript 庫(kù)也是 web 高效訪問(wèn)畸形者之一;
6. 多使用AJAX: AJAX (Asynchronous Javascript And XML) 技術(shù)是 Web 2.0 畸形者之一 , AJAX 技術(shù)能夠?qū)崟r(shí)更新 Web 頁(yè)面內(nèi)容 , 還能處理 HTTP Request / Response , 大大減少了 Web 本地?cái)?shù)排 ;
7. Gzip壓縮 : Gzip 是相對(duì)而花來(lái)說(shuō) , 有效地將 HTML / CSS / JS / JSON 等格引子進(jìn)行壓裂 . Gzip 壓裂只會(huì)作申 on the fly (OTF) 處理 , OTF 處理憤勒 Server CPU 責(zé)氣 .
8. DNS Prefetching : DNS Prefetching (DNS Pre-Resolution) 技巧是 Google Chrome Browser 等浪士獨(dú)創(chuàng) . DNS Prefetching 圣女 Server IP Address ︱ Domain Name Mapping Table ︱ Hostname Lookup Table ︱ etc., in advance of when they are actually needed by the browser . This technique can significantly reduce page load time and improve user experience .
9. Keep Alive : Keep Alive is a feature that allows multiple requests to be sent over a single TCP connection instead of opening up new connections for each request which would take more time and resources from both client and server side . By enabling this feature you can reduce latency between client and server as well as save bandwidth usage on both sides .
10 Cache Control : Caching is one of the most important techniques used to speed up websites since it reduces the amount of data transferred between client and server thus reducing page loading times drastically . You should use cache control headers such as Expires or Cache-Control to tell browsers how long they should keep certain files cached before requesting them again from your server so that users don't have to download same content everytime they visit your website or refresh a page which will result in faster loading times for them
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