Apache rules Alexa, with NginX, Microsoft and others playing catch-up

Alexa themes are still real and still interesting. Let me drill down into several statistics and data to derive some regularity and pattern information about the Web servers, implied for WebPages, that are enrolled in alexa.com. To do this, we need the detailed analyses of the data retrieved from HTTP headers.  Let’s start with the web server and its behavior. For this purpose, we consider the sample of 100,000 requests in the November-December period and compare the results with the six-month previous data. The sample can be divided into 90% recognized and 10% unrecognized web server volumes. This analysis considers only the recognized web server volume proportion. The reasons for the unrecognized ones could be due to security: many companies just hide their web server information, and also some servers don’t send web server information by default (and no one adds the information manually).
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