①保证网站的正常访问
②及加快网站访问速度和响应速度
③防止网站因黑客攻击,DNS解析劫持故障等导致的网站服务器的宕机状况的出现。
直播平台为什么需要CDN?
①直播平台突发性的流量增长成为常态,短时间内如何扩容扛过流量高峰,成为各大网络直播平台必须正视的问题。尤其是在移动直播领域,无线网络和移动宽带在稳定性方面无法与固定宽带比拟,CDN及云服务商的技术支持已经成为当下直播平台在内容传播层面最重要的保障,同时也为其拓展业务形态保驾护航。
②直播一直对网络的要求十分高,稍有问题,就会出现卡顿、花屏、爆音或者断线。而CDN作为内容分发网络,借助负载均衡系统将内容推送到接近用户的边缘节点,使得用户就近取得资源无疑大大增加了用户的访问速度以及访问的稳定性,这与直播的要求十分契合。
以手机APP为例,有以下步骤:1、打开手机中的腾讯视频APP,如下图所示:
/iknow-pic.cdn.bcebos.com/d50735fae6cd7b89c41d74eb002442a7d9330e60"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/d50735fae6cd7b89c41d74eb002442a7d9330e60?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/d50735fae6cd7b89c41d74eb002442a7d9330e60"/>
2、找到搜索栏,如下图所示:
/iknow-pic.cdn.bcebos.com/6c224f4a20a44623b8c2eb0a9722720e0cf3d74a"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/6c224f4a20a44623b8c2eb0a9722720e0cf3d74a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/6c224f4a20a44623b8c2eb0a9722720e0cf3d74a"/>
3、点击输入直播,如下图所示:
/iknow-pic.cdn.bcebos.com/f3d3572c11dfa9ec155c187f6dd0f703918fc16c"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/f3d3572c11dfa9ec155c187f6dd0f703918fc16c?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/f3d3572c11dfa9ec155c187f6dd0f703918fc16c"/>
4、打开看到有直播的视频,如下图所示:
/iknow-pic.cdn.bcebos.com/78310a55b319ebc4c5c938f18d26cffc1e171620"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/78310a55b319ebc4c5c938f18d26cffc1e171620?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/78310a55b319ebc4c5c938f18d26cffc1e171620"/>
5、点击更多可以看到正在直播的视频,如下图所示:
/iknow-pic.cdn.bcebos.com/94cad1c8a786c9174e061c51c63d70cf3bc75754"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/94cad1c8a786c9174e061c51c63d70cf3bc75754?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/94cad1c8a786c9174e061c51c63d70cf3bc75754"/>
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