Hi all,
I have an application which logs multiple lines per request in JSON format.
For example:
{"id": "001", "action": "start"}
{"id": "001", "action": "do stuff"}
{"id": "002", "action": "start"}
{"id": "001", "action": "end"}
{"id": "002", "action": "do stuff"}
{"id": "002", "action": "end"}
I would like to produce a histogram of the cardinality of the id field in
this data over time. That is to say, I to graph the number of requests to
the application rather than the number of log lines. Using the above
example, that would be a value of 2 and not a value of 6. I can see how I
would produce the cardinality value on point in time basis using the
Statistics panel. I can also see how I would graph the total number of log
entries using a histogram. What I would like to do is produce a histogram
of the cardinality of a particular field (in this case the id field).
Anybody able to offer any advice on how to achieve this?
Thanks!
Patrick
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