Qihoo 360 Technology Co., Ltd. (“Qihoo 360”) is one of China’s largest Internet security software providers. It has set up a world large-scale cloud security system with cutting-edge technologies, to remove multiple security threats on the Internet, such as Trojans, viruses, malware and phishing scam web pages. In August 2012, Qihoo 360 launched search engine service, in a bid to build a secure, clean and effectively competitive Internet search marketplace. To achieve this objective, the company has built a core search technical team comprising hundreds of engineers and owns more than ten thousand servers. The company’s huge web crawler (spider) system can grad as many as 1 billion web pages each day, and the number of high-quality web pages indexed by its search engine has reached tens of billions. CNZZ report shows that by the end of 2014, Qihoo’s web search traffic acquired around 30% shares in the market.

近年来各种各样的搜索引擎都在抢占搜索市场，竞争异常激烈当下搜索市场。与此同时，用户对搜索应用的要求也越来越高，最直观的用户体验就是搜索响应时间。
In recent years, all kinds of search engines have been competing for the search market, making the competition particularly fierce. Besides, users have higher demands on the search applications, and the most direct experience among users is the search response time.