State Management: What's the Big Deal?
HTTP by its very nature is a stateless protocol. This doesn't mean it disregards geographic boundaries; it means that it is not connection oriented. No request of the Web server can rely on data supplied by some other request. To understand this concept, let's look at an example of how a browser requests a Web page.
When a user types in the address of a Web site, www.deeptraining.com/default.aspx, for example, the Web browser performs a number of steps prior to displaying the page. First, the Web browser converts the hostname, in this case www, to an IP address. It does this by querying a DNS server and asking for the IP address. In our sample, this brings back 192.168.1.200. Next, the Web browser opens ...
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