logrus VS logr

It's some sort of logging system well explained by Alex Edwards in Let’s Go Further. As stated, we could have used logrus or any other popular logging system in Go.

Option 2, please. You may not have been around for the logrus debacle, but it was a giant pain.

For the example I’m using the very popular logrus library and then I’m setting the log formatter to be JSON

For choosing the candidates for the poll, I didn't do any thorough research. I was looking for a library to use in my project at work, and I ended up at sirupsen/logrus which was already being used by one of the dependencies in that project.

I contribute to OSS as part of my job on the regular. The company is good about contributing upstream, signing CLAs, and all that. We still work against private forks for two main reasons: 1. Some changes that we need are not accepted by maintainers based on philosophical or architectural reasons that we can’t otherwise work around. You’re beholden to then unless you publicly fork the repo which has other legal/PR overhead for the company and OSS political implications. 2. Maintainers in the past have taken down repos, renamed repos, or changed the licensing on repos that have left us in a lurch. We always build against our own private forks because we need predictability and can’t be beholden to some other party for business continuity. We sync them down from the public upstream at our leisure.

If they change the case on their username on the other hand, the Go ecosystem explodes: https://github.com/sirupsen/logrus/issues/570#issuecomment-3...

Like, for example, some projects importing logrus with a capital L and some with a lowercase L, and go modules having no way to reconcile the two: https://github.com/sirupsen/logrus/issues/553

Ugh. Wish people would stop using logrus. It’s in maintenance mode and slow, especially its stack tracing.

logr

How about using https://github.com/go-logr/logr You’ll be able to swap concrete implementation easily which will allow you to try out different libs on the market without refactoring all your logic

I recommend https://github.com/go-logr/logr and you can choose implementation freely but zerolog/zap are optimized for speed.

For logging, I use https://github.com/go-logr/logr with https://github.com/uber-go/zap

I'd say it depends. If I write a package for others to use I usually don't include a logger at all and let the user decide what he wants to use. For any other project that needs logging I usually skip the interface to not have the struggle with finding one interface that fits all at least logrus and zap. We kinda agreed at the team to just use zap by now. One.thing i wanted to try tho is using sth like logr which provides an interface for the most commonly used loggers.

After writing a lot of libraries I really appreciate logr. There are plenty of times when my library needs to output debugging info, but it's not practical to do things like parse flags for verbosity level. With thus I can just log at a higher V level and be done with it.