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posted @ 2014-09-02 13:21 徐大腿 阅读(95) 评论(0) 推荐(0) 编辑
摘要: 1.browser checks cache; if requested object is in cache and is fresh, skip to #92.browser asks OS for server's IP address3.OS makes a DNS lookup and r... 阅读全文
posted @ 2014-09-02 10:55 徐大腿 阅读(507) 评论(0) 推荐(1) 编辑