bizlogger是一款可输出CSV日志并按时间切分的日志模块，分割符可定制。goroutine安全。日志字符串拼接采用先计算总长度再一次性分配内存的方法来提升效率。按时间切分功能利用的是logrotator来实现的。经过在线上实际压测，QPS 6000的负载下能正常工作。

用法：

package main

import (
	"fmt"
	"github.com/pochard/bizlogger"
	"time"
)

func main() {
	// rollup every 20 minutes. And the log line is separated by ","
	logger, err := bizlogger.NewTabLogger("/data/web_log/click1-%Y%m%d-%H%M.log", 20*time.Minute, ",")
	if err != nil {
		fmt.Printf("%v", err)
		return
	}
	defer logger.Close()

	sl := make([]string, 4)
	sl[0] = "410001"
	sl[1] = "1583893679"
	sl[2] = "183.199.195.151"
	sl[3] = "C03FD5AAB4CA"

	for i := 0; i != 10; i++ {
		err := logger.Log(sl)
		if err != nil {
			fmt.Printf("%v", err)
		}
	}
}

输出日志：

click1-20200328-0920.log
click1-20200328-0940.log
click1-20200328-1000.log

日志内容：

410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA
410001,1583893679,183.199.195.151,C03FD5AAB4CA

相关文章：

《Go日志滚动模块logrotator的使用方法及性能》