flexi_logger vs log-easy vs rat_logger

An easy-to-configure and flexible logger that writes logs to stderr or stdout and/or to files. It allows custom logline formats, and it allows changing the log specification at runtime. It also allows defining additional log streams, e.g. for alert or security messages.

Easy to use file logger with log levels and global logging macros.

具有生产者消费者架构、异步文件操作和分层配置系统的高性能日志库