How To
Summary
Regular expressions, or regex, are widely used in QRadar for data extraction, parsing, event correlation, and searching. When an event is received, QRadar uses regular expressions, in the custom event properties, to extract specific fields from the raw event data and map them to normalized event format. If the regular expression used is too complex, or inefficient, parsing is slow decreasing processing capacity. This behavior can lead to events waiting on persistent queue and routing to storage.
Document Location
Worldwide
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Document Information
Modified date:
24 February 2023
UID
ibm16957752