logs: logrus replacement

[ldez]

Welcome!

• Yes, I've searched for similar issues on GitHub and didn't find any.
• Yes, I've searched for similar issues on the Traefik community forum and didn't find any.

What did you expect to see?

Currently, we use logrus but logrus is in maintenance mode.
It's not a major problem because logrus is still maintained but no new features will be added.

Logrus is in maintenance mode. We will not be introducing new features. It's simply too hard to do in a way that won't break many people's projects, which is the last thing you want from your Logging library (again...).

Otherwise, the "new generation" of logging libraries (zap, zerolog) has better performance.

• https://github.com/uber-go/zap#performance
• https://github.com/rs/zerolog#benchmarks

Their benchmarks seem a bit opinionated but they agree on the fact to have better performance than logrus.

There is also slog

So, we will evaluate the replacement of logrus for the Traefik logs and the access logs.