logrus是使用Golang开发的日志库，支持日志文件的压缩和分隔
示例
package main
import (
"github.com/sirupsen/logrus"
lumberjack "gopkg.in/natefinch/lumberjack.v2"
)
func main() {
// 配置日志分隔
lc := lumberjack.Logger{
Filename: "a.log",
MaxSize: 1,
MaxBackups: 5,
Compress: true,
}
logrus.SetLevel(logrus.DebugLevel)
logrus.SetReportCaller(true)
logrus.SetFormatter(&logrus.TextFormatter{})
logrus.SetOutput(&lc)
logrus.Infof("hello logrus\n")
logrus.Debugf("hello debug\n")
// 带标签的日志
logrus.WithFields(logrus.Fields{"x": "y"}).Debug("xxx")
}