Creating summary log files

Content Gateway performs several hundred operations per second; therefore, event log files can grow quite large. Using SQL-like aggregate operators, you can configure Content Gateway to create summary log files that summarize a set of log entries over a specified period of time. This can reduce the size of the log files generated.

You generate a summary log file by creating a LogFormat object in the XML-based logging configuration file (logs_xml.config) using the following SQL-like aggregate operators:

• COUNT
• SUM
• AVERAGE
• FIRST
• LAST

You can apply each of these operators to specific fields, requesting it to operate over a specified interval.

Summary log files represent a trade-off between convenience and information granularity. Since you must specify a time interval during which only a single record is generated, you can lose information. If you want the convenience of summary logs and need the detail of a conventional log file, consider creating and enabling two custom log formats—one using aggregate operators and the other not using aggregate operators.