A record of basic CDN activity can be archived as an asset in your CDN storage account or on an external server. This record is known as a raw log file. Raw log files are collected approximately every 15 minutes from around the world. If a server is unable to provide log file information at a given time, then the server will deliver it when communication resumes.
Activation is required to archive raw log files.
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Activity in a log file is time-stamped using GMT notation. This allows you to keep track of when an event took place, regardless of the time zone where it was recorded.