emqx4.3/changes/ce/feat-12785.en.md

Add timestamp_format config to log handers.

We've added a new configuration option timestamp_format to the log handlers. This new config supports the following values:

• auto: Automatically determines the timestamp format based on the log formatter being used. Utilizes rfc3339 format for text formatters, and epoch format for JSON formatters.
• epoch: Represents timestamps in microseconds precision Unix epoch format.
• rfc3339: Uses RFC3339 compliant format for date-time strings. For example: 2024-03-26T11:52:19.777087+00:00.