Instrumenting Applications
Applications must provide the internal loading, customer, and business behavior metrics that are necessary to understand their functioning. These metrics can be collected by instrumentation from the web-server systems and applications, from other server components, and from the end user. These are discussed in the following sections.
Instrumenting Web Servers
Web analytics products are used to obtain customer behavior metrics. The earliest focused on analysis of web logs produced by the standard web server applications, such as Apache Software Foundation's HTTP Web Server and Microsoft's Internet Information Server (IIS).
Server logs provide the most basic information on the accessed pages and the time of the request. ...
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