GitHub user ppkarwasz added a comment to the discussion: Is using %uuid{RANDOM}
pattern in JsonTemplateLayout considered garbage-free?
**BTW**: Using `%uuid` as value for
[logging.googleapis.com/insertId](https://cloud.google.com/logging/docs/reference/v2/rest/v2/LogEntry#FIELDS.insert_id)
does not fulfill the **unicity** requirement from the documentation:
> _Optional_. A unique identifier for the log entry. If you provide a value,
> then Logging considers other log entries in the same project, with the same
> timestamp, and with the same `insertId` to be duplicates which are removed in
> a single query result. However, there are no guarantees of de-duplication in
> the export of logs.
> If the `insertId` is omitted when writing a log entry, the Logging API
> assigns its own unique identifier in this field.
The same log event, delivered by different appenders will have different UUIDs.
See #3503 for a discussion.
GitHub link:
https://github.com/apache/logging-log4j2/discussions/3585#discussioncomment-12696880
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