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> not the software to output data in a specific format

I like to output structured log anyway. Not JSON as it's not really human readable but at least in "logfmt" format[1] as it's both human readable and easy to parse.

FYI, Go provides `log/slog` which offers structured logging in both formats (JSON and logfmt).

[1] - https://brandur.org/logfmt

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I more-so meant there's not a single, standard way. Lots of software uses logging libraries with arbitrary serialization formats but you generally need to take each schema into account (one software might use "error" while another uses "err")

Compared to OpenTelemetry traces (which many vendors support) that has standardized field names with the ability to attach arbitrary data

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