http://blog.sgmansfield.com/2017/04/nanolog-super-fast-logging-for-go/

Nanolog is super fast, as low as 70ns to log a line, and works with concurrent loggers. It uses a somewhat different model than most people are used to for the API; you can think of it like prepared statements for logging. It is currently at version 0.1.0.

This package was inspired by a project of the same name for C++.

https://github.com/ScottMansfield/nanolog