proposal: log: support millisecond timestamp resolution

[mitar]

I would suggest that alongside microsecond or second resolution Go log library would also have millisecond timestamp resolution.

Existing implementation has only microsecond or second resolution, but microsecond resolution could be seen as too precise (access to logs could be used for help with side channel attacks) while second resolution is not precise enough, at least for me, to grasp the evolution of events when many happen at the same time.

This would add the Lmilliseconds flag.

I have made draft of the implementation here https://go-review.googlesource.com/c/go/+/495298 and it seems pretty minimal (#60246).

[seankhliao]

I think this falls into the same category as #34416 (comment)

[mitar]

I think this is a minimal change, very similar to existing code.

[gopherbot]

Change https://go.dev/cl/495298 mentions this issue: log: support millisecond timestamp resolution

[yifan513]

Any progress? This is so useful.

[distinctdan]

+1, the default seconds is pretty useless.

[seankhliao]

consider using log/slog with https://pkg.go.dev/log/slog#TextHandler

[distinctdan]

@seankhliao I wanted to, but the text format is too verbose with the key=value format, and it looks like it doesn't support any configuration options.