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BLog4go:Go 实现的高性能日志库

Introduction

BLog4go is an efficient logging library written in the Go programming language, providing logging hook, log rotate, filtering and formatting log message.

BLog4go 是高性能日志库。创新地使用“边解析边输出”方法进行日志输出,同时支持回调函数、日志淘汰和配置文件。可以解决高并发,调用日志函数频繁的情境下,日志库造成的性能问题。

Features

  • Partially write to the bufio.Writer as soon as posible while formatting message to improve performance
  • Support different logging output file for different logging level
  • Support configure with files in xml format
  • Configurable logrotate strategy
  • Call user defined hook in asynchronous mode for every logging action
  • Adjustable message formatting
  • Configurable logging behavier when looging on the fly without restarting
  • Suit configuration to the environment when logging start
  • Try best to get every done in background
  • File writer can be configured according to given config file
  • Different output writers
    • Console writer
    • File writer
    • Socket writer

Quick-start

package main  import (     log "github.com/YoungPioneers/blog4go"     "fmt"     "os" )  // optionally set user defined hook for logging type MyHook struct {     something string }  // when log-level exceed level, call the hook // level is the level associate with that logging action. // message is the formatted string already written. func (self *MyHook) Fire(level log.Level, message string) {     fmt.Println(message) }  func main() {     // init a file write using xml config file     err := log.NewFileWriterFromConfigAsFile("config.xml")     if nil != err {         fmt.Println(err.Error())         os.Exit(1)     }     defer log.Close()      // initialize your hook instance     hook := new(MyHook)     log.SetHook(hook) // writersFromConfig can be replaced with writers     log.SetHookLevel(log.INFO)     log.SetHookAsync(true) // hook will be called in async mode      // optionally set output colored     log.SetColored(true)      log.Debugf("Good morning, %s", "eddie")     log.Warn("It's time to have breakfast")  }

config.xml

<blog4go minlevel="info">     <filter levels="trace">         <rotatefile path="trace.log" type="time"></rotatefile>     </filter>     <filter levels="debug,info" colored="true">         <file path="debug.log"></file>     </filter>     <filter levels="error,critical">         <rotatefile path="error.log" type="size" rotateSize="50000000" rotateLines="8000000"></rotatefile>     </filter> </blog4go>

Installation

If you don't have the Go development environment installed, visit the Getting Started document and follow the instructions. Once you're ready, execute the following command:

go get -u github.com/YoungPioneers/blog4go

Benchmark

I do some benchmark on a HDD disk comparing amoung fmt,blog4go,seelog,logrus.Benchmark Code

BenchmarkBlog4goSingleGoroutine-4                    1000000          1087 ns/op BenchmarkBlog4goMultiGoroutine-4                       30000         56569 ns/op BenchmarkFmtFormatSingleGoroutine-4                   300000          5104 ns/op BenchmarkFmtFormatWithTimecacheSingleGoroutine-4      300000          4256 ns/op BenchmarkFmtFormatWithTimecacheMultiGoroutine-4         3000        509579 ns/op BenchmarkLogrusSingleGoroutine-4                      100000         13757 ns/op BenchmarkLogrusWithTimecacheSingleGoroutine-4         100000         12752 ns/op BenchmarkLogrusWithTimecacheMultiGoroutine-4            1000       2049809 ns/op BenchmarkSeelogSingleGoroutine-4                       50000         32846 ns/op BenchmarkSeelogMultiGoroutine-4                         1000       3191334 ns/op

It shows that blog4go can write log very fast, especially in situation with multi goroutines running at the same time~

Documentation

TODO

Examples

Full examples please viewEXAMPLES

Changelog

CHANGELOG

原文  https://github.com/YoungPioneers/blog4go
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