18.4. Accounting
Another important problem CDI has to address is accounting. Most content providers demand detailed statistics on how much content was served to which client and when. This information in its unaggregated form is extensive. For example, the Web site of a popular TV game show logs about 1Byte of data for every 10Bytes of data served. Sending these logs to the content provider will saturate its links to the Internet and partly defeat the purpose of CDNs. Therefore, the data clearly has to be aggregated before it can be transferred to the content provider. In the context of CDI these aggregation methods and the resulting log formats have to be standardized.
In addition to the log aggregation issue, the accounting system also has ...
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