云计算
将计算资源作为一个远程的服务，以灵活、符合成本效益的方式提供出来的模型成为云计算。
云计算已经普及并成为IT行业主流技术，其实质是在计算量越来越大、数据越来越多、越来越动态、越来越实时的需求背景下被催生出来的一种基础架构和商业模式。个人用户将文档、照片、视频、游戏存档记录上传至“云”中永久保存，企业客户根据自身需求，可以搭建自己的“私有云”，或托管、或租用“公有云”上的IT资源与服务，这些都已不是新鲜事。可以说，云是一棵挂满了大数据的苹果树。
云计算和大数据是一个硬币的两面，云计算是大数据的IT基础，而大数据是云计算的一个杀手级应用。
Hadoop
Hadoop是一个用于数据存储和数据处理的可扩展的容错分布式系统。Hadoop由两个主要的系统构成：HDFS和MapReduce
Pig
Pig是构建在Hadoop之上用于处理大数据集的一个平台，它提供了一种称为Pig Latin的高层数据流处理语言。
Hive
Hive是构建在Hadoop之上的数据仓库系统，它能方便的实现简单的数据汇总、即席查询和存储于HDFS中大型数据集的分析。
Dynamic Web Page VS DHTML
Dynamic HTML, or DHTML, is an umbrella term for a collection of technologies used together to create interactive and animated web sites by using a combination of a static markup language (such as HTML), aclient-side scripting language (such as JavaScript), a presentation definition language (such as CSS), and the Document Object Model.
DHTML allows scripting languages to change variables in a web page's definition language, which in turn affects the look and function of otherwise "static" HTML page content, after the page has been fully loaded and during the viewing process. Thus the dynamic characteristic of DHTML is the way it functions while a page is viewed, not in its ability to generate a unique page with each page load.
By contrast, a dynamic web page is a broader concept, covering any web page generated differently for each user, load occurrence, or specific variable values. This includes pages created by client-side scripting, and ones created by server-side scripting (such as PHP, Perl, JSP or ASP.NET) where the web server generates content before sending it to the client.
Web analytics is the monitoring and reporting of Web site usage so that there is a better understanding of the interactions between Web visitor actions and what the Web site offers, as well as leveraging that insight to optimize the site for increased customer loyalty and business benefits.
Hit: A browser request for any one item, such as a page, graphic, or other resource. It may take several hits to bring up a single Web page as displayed in a browser.
Hits per visit: The number of hits occurring in a given visit.
Page view: The number of deliberate requests to a given URL. For example, one Web page that contains three frames and 12 artwork files would generate one page view, but 15 hits. This calculation is an approximation based on the time, sequence, and referral page from which various resources were requested.
Page views per visit: The number of page views occurring in a given visit.
Referral: The resource from which a visitor requests another resource, expressed as a URL
Domain: The unique name that identifies an Internet site (EDU, ORG, COM)
Subdomain: The text name of the item to the left of the domain (ibm.com, microsoft.com)
Visit: A continuous period of activity by one visitor to a Web site. This measurement can also be referred to as a session (usually within 30 minutes).
The terms "sessionization" and "visits" are interchangeable. Sessionization is the determination of the number of visitors to a Web site.
