Replies: 27 comments 13 replies
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fsnotify 文件系统事件监听通知fsnotify is a Go library to provide cross-platform filesystem notifications on fsnotify requires Go 1.16 or newer. API docs: https://pkg.go.dev/github.com/fsnotify/fsnotify UsageA basic example: package main
import (
"log"
"github.com/fsnotify/fsnotify"
)
func main() {
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
defer watcher.Close()
done := make(chan bool)
go func() {
for {
select {
case event, ok := <-watcher.Events:
if !ok {
return
}
log.Println("event:", event)
if event.Has(fsnotify.Write) {
log.Println("modified file:", event.Name)
}
case err, ok := <-watcher.Errors:
if !ok {
return
}
log.Println("error:", err)
}
}
}()
err = watcher.Add("/tmp")
if err != nil {
log.Fatal(err)
}
<-done
}A slightly more expansive example can be found in cmd/fsnotify, |
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fasthttpFast HTTP package for Go. Tuned for high performance. Zero memory allocations in hot paths. Up to 10x faster than net/http
Fast HTTP implementation for Go. fasthttp might not be for you!fasthttp was design for some high performance edge cases. Unless your server/client needs to handle thousands of small to medium requests per seconds and needs a consistent low millisecond response time fasthttp might not be for you. For most cases |
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GoDS (Go Data Structures)GoDS (Go Data Structures) - Sets, Lists, Stacks, Maps, Trees, Queues, and much more 实现了常见的数据结构，可直接引入到实际的项目中使用，包含链表、栈、哈希表、树等等 |
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cobra命令行程序库可以用来编写命令行程序。同时，它也提供了一个脚手架， 用于生成基于 cobra 的应用程序框架。非常多知名的开源项目使用了 cobra 库构建命令行，如Kubernetes、Hugo、etcd等等等等。
Cobra is a library for creating powerful modern CLI applications. Cobra is used in many Go projects such as Kubernetes, OverviewCobra is a library providing a simple interface to create powerful modern CLI Cobra provides:
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gorilla/muxPackage The name mux stands for "HTTP request multiplexer". Like the standard
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爬虫 gocolly/collyLightning Fast and Elegant Scraping Framework for Gophers Colly provides a clean interface to write any kind of crawler/scraper/spider. With Colly you can easily extract structured data from websites, which can be used for a wide range of applications, like data mining, data processing or archiving. |
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GoReleaserDeliver Go binaries as fast and easily as possible. GoReleaser builds Go binaries for several platforms, creates a GitHub release and then |
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golang/crypto密码库This repository holds supplementary Go cryptography libraries.
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About DelveDelve is a debugger for the Go programming language. The goal of the project is to provide a simple, full featured debugging tool for Go. Delve should be easy to invoke and easy to use. Chances are if you're using a debugger, things aren't going your way. With that in mind, Delve should stay out of your way as much as possible. Delve整体架构采用Serve/Client
Delve用法
$ CFG_APPID=xxx CFG_USER_ID=xxx CFG_USER_KEY=xxx CFG_ENV=dev dlv debug -- -conf rpc_go_dev.yamldlv debug
编译并开始调试 dlv attach
链接到正在运行中的进程并开始调试 这个命令将使Delve控制一个已经运行的进程，并开始一个新的调试会话。退出调试会话时，您可以选择让进程继续或终止它。 |
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报错解决方案
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Logrus
Logrus is a structured logger for Go (golang), completely API compatible with the standard library logger. |
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goroutine pool 协程池goroutine虽然非常的轻量，但是滥用或者使用不规范也会导致系统资源浪费，甚至耗尽！ |
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panjf2000/ants 🐜
📖 简介
🚀 功能：
⚔️ 目前测试通过的 Golang 版本：从 Go 1.8.x 到 Go 1.18.x 的所有版本。 |
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使用闭包函数作为ants任务参数ants支持将一个不接受任何参数的函数作为任务提交给 goroutine 运行。由于不接受参数，我们提交的函数要么不需要外部数据，只需要处理自身逻辑，否则就必须用某种方式将需要的数据传递进去，例如闭包。 包装函数返回实际的任务函数，该任务函数就可以通过闭包访问它需要的数据了： type taskFunc func()
func taskFuncWrapper(nums []int, i int, sum *int, wg *sync.WaitGroup) taskFunc {
return func() {
for _, num := range nums[i*DataPerTask : (i+1)*DataPerTask] {
*sum += num
}
fmt.Printf("task:%d sum:%d\n", i+1, *sum)
wg.Done()
}
}提交任务给ants池执行，这里使用taskFuncWrapper()包装函数生成具体的任务，然后调用p.Submit()提交： nums := make([]int, DataSize, DataSize)
for i := range nums {
nums[i] = rand.Intn(1000)
}
var wg sync.WaitGroup
wg.Add(DataSize / DataPerTask)
partSums := make([]int, DataSize/DataPerTask, DataSize/DataPerTask)
for i := 0; i < DataSize/DataPerTask; i++ {
p.Submit(taskFuncWrapper(nums, i, &partSums[i], &wg))
}
wg.Wait() |
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gjson
get json values quickly GJSON is a Go package that provides a fast and simple way to get values from a json document. Also check out SJSON for modifying json, and the JJ command line tool. This README is a quick overview of how to use GJSON, for more information check out GJSON Syntax. |
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sjson
set a json value quickly SJSON is a Go package that provides a very fast and simple way to set a value in a json document. For a command line interface check out JJ. |
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jj
JJ is a command line utility that provides a fast and simple way to retrieve or update values from JSON documents. It's fast because it avoids parsing irrelevant sections of json, skipping over values that do not apply, and aborts as soon as the target value has been found or updated. |
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easyjson
Package easyjson provides a fast and easy way to marshal/unmarshal Go structs to/from JSON without the use of reflection. In performance tests, easyjson outperforms the standard easyjson aims to keep generated Go code simple enough so that it can be easily optimized or fixed. Another goal is to provide users with the ability to customize the generated code by providing options not available with the standard |
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Air
☁️ Live reload for Go apps
English | 简体中文 MotivationWhen I get started with developing websites in Go and gin framework, it's a pity Air is yet another live-reloading command line utility for Go applications in development. Just NOTE: This tool has nothing to do with hot-deploy for production. Features
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FreshFresh is a command line tool that builds and (re)starts your web application everytime you save a Go or template file. If the web framework you are using supports the Fresh runner, it will show build errors on your browser. It currently works with Traffic, Martini and gocraft/web. |
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samber/lo✨ 该项目开始时是对新泛型实现的实验。它在某些方面可能看起来像Lodash。我曾经使用神奇的"go-funk" 包编写代码，但是“go-funk”使用反射，因此不是类型安全的。 正如预期的那样，基准测试表明泛型比基于“反射”包的实现要快得多。与纯for循环相比，基准测试也显示出类似的性能提升。 将来，会有5到10个helper与Go标准库中的helper重叠(包名为“slices”和“maps”)。我觉得这个库是合法的，并且提供了许多更有价值的抽象。 See also:
Why this name? I wanted a short name, similar to "Lodash" and no Go package currently uses this name.
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json-iterator/go高性能、可插拔、100%兼容和替换标准库
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100% 兼容标准库用法默认情况下，jsoniter不像标准库那样对映射键进行排序。如果你想要100%的兼容性，就像这样使用它
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errgrouperrgroup包为一组处理公共任务的子任务协程提供 同步、错误传播和上下文取消能力。 |
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并发编程包之 errgrouperrgroup 本质
errgroup 用法errgroup 源码
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Go 时间 开源库 |
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Now go语言time工具集Now is a time toolkit for golang
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uniplaces/carbon
A simple extension for Time based on PHP's Carbon library.
Features:
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golang-module/carbon
IntroductionA simple, semantic and developer-friendly golang package for datetime Carbon has been included by awesome-go, if you think |
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Go 每日一库之 carboncarbon库是一个时间扩展库，基于 PHP 的carbon库编写。提供易于使用的接口。 时区
示例：
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Go语言爱好者周刊Go语言爱好者周刊旨在为大家分享一周值得了解、学习的 Go语言相关内容。每周日发布。 |
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filetypefiletype可以根据文件的魔数（magic numbers）签名来推断文件的类型和 MIME 类型。它支持多种常见的文件类型，包括图片、视频、音频、文档、压缩包等。它还提供了一些便捷的函数和类型匹配器，可以方便地对文件进行分类和筛选。 特性：
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filetype: 一个基于 Go 语言的文件类型鉴别神器实现原理分析
使用示例
优缺点
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mimetypemimetypeA package for detecting MIME types and extensions based on magic numbersGoroutine safe, extensible, no C bindings
特性
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mimetype：一文读懂 Go 文件类型检测库的原理和用法原理
用法
自定义扩展类型使用 mimetype.Extend 函数来扩展树结构，以支持一些 mimetype 库没有内置的文件格式 func main() {
// 自定义的检测函数 foobarDetector，它判断文件是否以 "foobar" 开头
foobarDetector := func(raw []byte, limit uint32) bool {
return bytes.HasPrefix(raw, []byte("foobar"))
}
// 使用了 mimetype.Lookup 函数来查找 text/plain 节点，然后使用了 Extend 方法来添加一个子节点
// 如果是，就返回 text/foobar 作为 MIME 类型和 .fb 作为扩展名
mimetype.Lookup("text/plain").Extend(foobarDetector, "text/foobar", ".fb")
mtype := mimetype.Detect([]byte("foobar file content"))
fmt.Println(mtype.String(), mtype.Extension())
} |
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sourcegraph/conc
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看了这款Go并发库后, 感觉以后不用造轮子了，还支持范型
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gopsutil process and system utilities一个跨平台库，用于查询进程和系统利用率(CPU、内存、磁盘、网络、传感器)的信息 |
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Go 语言如何获取 CPU 利用率
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gopkg.in/yaml.v3YAML support for the Go language |
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开源库
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