...
- [log_id] : the log id which must be UNIQUE per day, per facet field and value, in order to exploit those logs with ELK
- [timestamp] : the timestamp of the log. It is formatted and could be different from the log4j timestamp so it is mandatory
- [num_doc] : the number of documents found according to the facet
- [facet_value] : the facet value represented by the log
- [facet_field] : the facet field used
...