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模拟构建DNS解析流程-一条逐渐变咸的咸鱼

 5 years ago
source link: http://blog.51cto.com/11010461/2123639
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背景DNS初步认识  DNS（DomainNameServer，域名系统）是互联网上作为域名和IP地址相互映射的一个分布式数据库，能够使用户方便的访问互联网，而不用去费力的记忆IP字符串。通过域名，最终可以得到该域名对应的IP地址的过程叫做域名解析。DNS协议运行在UDP洗衣上，使用的是53号端口。    DNS的重要性以及高可用（DNS

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