Golang包中正确的日志记录实现

package mypackage

import (
    "log"
    "os"
)

var logger = log.New(os.Stdout, "mypackage: ", log.LstdFlags)

func DoSomething() {
    logger.Println("Doing something...")
    // 这里是业务逻辑
}

package mypackage

import (
    "go.uber.org/zap"
)

var logger *zap.Logger

func init() {
    logger, _ = zap.NewProduction()
}

func DoSomething() {
    logger.Info("Doing something...")
    // 这里是业务逻辑
}

logger.Debug("Detailed debug information")
logger.Info("General information")
logger.Warn("Potential issue")
logger.Error("Critical error")

import (
    "github.com/natefinch/lumberjack"
    "go.uber.org/zap/zapcore"
)

var logger *zap.Logger

func init() {
    w := zapcore.AddSync(&lumberjack.Logger{
        Filename:   "/var/log/myapp.log",
        MaxSize:    10, // megabytes
        MaxBackups: 3,
        MaxAge:     28, //days
    })
    core := zapcore.NewCore(
        zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig()),
        w,
        zap.InfoLevel,
    )
    logger = zap.New(core)
}

import (
    "github.com/rs/zerolog"
    "github.com/rs/zerolog/log"
)

func init() {
    zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
    log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
}