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TBF for the vast majority of logging it doesn't really matter. Not to mention the laziness is only the (usually cheap) formatting itself. If you're logging the result of non-trivial expressions (which would otherwise not be computed at all) you have to handroll it.

f-strings are mostly unusable for translatable contexts. And format-strings also don't work then (they're a security issue).




I already experienced performance issue, just because log messages (millions/s) were evaluated, for logger in debug mode, so it really depends on the system.




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