在Go语言世界中，日志库并不像Java世界那里有一个具有统治力的日志库。在做新项目技术选型的时候，难免会遇到日志库的选择问题，今天笔者就为大家介绍一下在Github中stars数最多的Go日志库。
logrus是我已知的Go语言日志库中在Github中stars数最多的日志库，功能强大，性能也不错。另外值得一提的是logrus的一个fork库gogap/logrus，可以配置输出到文件和graylog日志系统，基础的level、调用链、行号，文件切分都有，特色是结构化日志可以被统计和索引，借助graylog就可以做日志分析，不过这个库很久没有维护了。
zap是Go中一个快速，结构化，分级日志库，Uber出品。能够激活强大的ad-hoc分析, 灵活的仪表板, 其功能超过其他工具ELK, Splunk, 和 Sentry. 所有日志消息都是JSON-serialized。也是目前笔者使用的日志库之一。
zerolog也是一款性能相当好的日志库，有趣的是zerolog和zap都在自家的Github库首页中的性能对比数据里打败了对方：）
Seelog是一个原生Go日志库,提供了灵活的异步调度、过滤和格式化。这也是笔者较早期使用的Go日志库之一。
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。
有一些Github库star数并不多，但是功能却很多，例如mkideal/log、go-log、alog等就是功能十分齐全的日志库，简单易用。还有一些是对开发工程中有些小帮助的库，例如happierall/l。
下面是我整理的Go语言日志库列表，大家可以依据自己项目的实际需求选择（如果您还有好用的Go日志库推荐，请留言分享）。
| Project Name | Stars | Forks | Description |
|---|---|---|---|
| logrus | 5471 | 775 | Structured, pluggable logging for Go. |
| zap | 2761 | 175 | Blazing fast, structured, leveled logging in Go. |
| oklog | 1914 | 61 | A distributed and coördination-free log management system |
| glog | 1496 | 307 | Leveled execution logs for Go |
| Seelog | 960 | 173 | Seelog is a native Go logging library that provides flexible asynchronous dispatching, filtering, and formatting. |
| log15 | 625 | 79 | Structured, composable logging for Go |
| zerolog | 444 | 18 | Zero Allocation JSON Logger |
| apex/log | 433 | 38 | Structured logging package for Go. |
| log | 215 | 14 | Simple, configurable and scalable Structured Logging for Go. |
| blog4go | 189 | 31 | BLog4go is an efficient logging library written in the Go programming language, providing logging hook, log rotate, filtering and formatting log message. |
| logutils | 176 | 18 | Utilities for slightly better logging in Go (Golang). |
| log4go | 161 | 109 | Logging package similar to log4j for the Go programming language |
| fileLogger | 80 | 27 | fileLogger是一个基于Go开发的可自动分割文件进行备份的异步日志库 |
| gogap/logrus | 75 | 775 | Obsolete, Please refer to gogap/logrus_mate |
| ozzo-log | 74 | 17 | A Go (golang) package providing high-performance asynchronous logging, message filtering by severity and category, and multiple message targets. |
| azer/logger | 74 | 9 | Minimalistic logging library for Go. |
| alexcesaro/log | 42 | 4 | Logging packages for Go |
| happierall/l | 33 | 3 | Golang Pretty Logger.Custom go logger for pretty print, log, debug, warn, error with colours and levels. |
| mkideal/log | 33 | 2 | pluginable, fast,structrued and leveled logging package |
| slf | 33 | 1 | Structured Logging Facade (SLF) for Go |
| logex | 29 | 6 | An golang log lib, supports tracking and level, wrap by standard log lib |
| gologger | 26 | 5 | Simple Logger for golang. Logs Into console, file or ElasticSearch. Simple, easy to use. |
| go-log | 24 | 9 | A logger, for Go |
| slog | 22 | 1 | The reference SLF (structured logging facade) implementation for Go |
| cxr29/log | 18 | 14 | log - Go level and rotate log |
| ulog | 15 | 2 | ulog - Structured and context based logging for golang |
| siddontang/go-log | 14 | 5 | a golang log lib supports level and multi handlers |
| ccpaging/log4go | 13 | 109 | Logging package similar to log4j for the Go programming language |
| mlog | 11 | 9 | A simple logging module for go, with a rotating file feature and console logging. |
| alog | 6 | 2 | Golang async log package |
| golog | 5 | 1 | golog is a multilayer & leveled & structured logger for golang. |
| szxp/log | 5 | 0 | A small structured logging library for Golang |
| go-async-log | 4 | 2 | Golang异步日志库，支持异步批量写入，按天或者小时自动切割，错误等级，多文件等 |
| log | 1 | 1 | 一个基于Golang的日志模块 |
最后是两个benchmark库，提供的部分Go日志库的性能对比数据，供大家做技术选型时参考
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