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GoCN 每日新闻 (2022-1-15)

  1. https://jogendra.dev/writing-maintainable-go-code Writing maintainable Go code
  2. https://mp.weixin.qq.com/s/h8vhy8IJKnA8aNbTlCoQtg 理解 go 中空结构体的应用和实现原理
  3. https://juejin.cn/post/7053109648223633438 Go 并发写 map 产生错误能够通过 recover() 恢复吗?
  4. [https://soulteary.com/2022/01/15/explain-the-golang-resource-embedding-solution-part-1.html](https://soulteary.com/2022/01/15/exp … ⌘ Read more

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Netflix Raises Monthly Subscription Prices in US, Canada
Netflix has raised its monthly subscription price by $1 to $2 per month in the United States depending on the plan, the company said on Friday, to help pay for new programming to compete in the crowded streaming TV market. From a report: The standard plan, which allows for two simultaneous streams, now costs $15.49 per month, up from $13.99, in the Unite … ⌘ Read more

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Seamless Sign-in with Docker Desktop 4.4.2
Starting with Docker Desktop 4.4.2 we’re excited to introduce a new authentication flow that will take you through the browser to sign in, simplifying the experience and allowing users to get all the benefits of autofill from whatever browser password manager they may use. Gone are the days of going to your browser, opening your […]

The post [Seamless Sign-in with Docker Desktop 4.4.2](https://www.docker.com/blog/seamless-sign-in-with-docker-desktop-4-4 … ⌘ Read more

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GoCN 每日新闻(2022-01-14)

  1. 《Go 组件设计与实现》-netpoll 的总结https://www.cnblogs.com/codexiaoyi/p/15798780.html
  2. Uber 對 Golang GC 的調整https://blog.gslin.org/archives/2022/01/13/10503/uber-%e5%b0%8d-golang-gc-%e7%9a%84%e8%aa%bf%e6%95%b4/
  3. 基于 etcd 实现大规模服务治理应用实战https://mp.weixin.qq.com/s/zOZrCNZ9X6IyKxzRMeReWg
  4. 勒索软件正在用 Go 重写,用于联合攻击 Window … ⌘ Read more

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GoCN 每日新闻 (2021-12-31)

  1. 快速了解 “小字端” 和 “大字端” 及 Go 语言中的使用https://developer.51cto.com/art/202112/697505.htm
  2. Golang 与非对称加密https://www.ssgeek.com/post/golang-yu-fei-dui-cheng-jia-mi
  3. 一文搞懂 Docker、Containerd、RunC 间的联系和区别https://mp.weixin.qq.com/s/kVh_EXGeMy_UI6qIgbmsGQ
  4. Golang 项目的配置管理——Viper 简易入门配置[https://www.cnblogs.com/Mrxuexi/p/15750455.html](https://www.cnblogs.com … ⌘ Read more

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GoCN 每日新闻 (2022-01-13)
GoCN 每日新闻 (2022-01-13)

  1. Golang《基于 MIME 协议的邮件信息解析》部分实现https://gocn.vip/topics/20948
  2. 泛型可以拯救 Golang 笨拙的错误处理吗?https://blog.dnmfarrell.com/post/can-generics-rescue-golangs-clunky-error-handling/
  3. 更多的并行,并不等同更高的性能https://convey.earth/conversation?id=44
  4. 为什么 Go 有两种声明变量的方式,有什么区别,哪种好? [https://mp.weixin.qq.com/s/ADwEhSA1kFOFqzIyWvAqsA](https://mp.weixin.q … ⌘ Read more

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Go 分布式令牌桶限流 + 兜底策略
上篇文章提到固定时间窗口限流无法处理突然请求洪峰情况,本文讲述的令牌桶线路算法则可以比较好的处理此场景。

工作原理
  1. 单位时间按照一定速率匀速的生产 token 放入桶内,直到达到桶容量上限。
  2. 处理请求,每次尝试获取一个或多个令牌,如果拿到则处理请求,失败则拒绝请求。

Image

优缺点

优点

可以有效处理瞬间的突发流量,桶内存量 token 即可作为流量缓冲区平滑处理突发流量。

缺点

实现较为复杂。

代码实现

core/limit/tokenlimit.go

分布式环境下考虑使用 redis 作为桶和令牌的存储容器,采用 lua 脚本实现整个算法流程。

redis lua 脚本


<span class="c1">-- 每秒生成token数量即token生成速度</span>
<span class="kd">local</span> <span class="n">rate</span> <span cl ... ⌘ [Read more](https://gocn.vip/topics/20950)

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Ignite Realtime Blog: Openfire 4.5.6 is released
Openfire 4.5.6 has been released, that addresses an annoying issue that was affecting the earlier 4.5.5 release. We’ve updated the bundled log4j library to version 2.17.1 for good measure.

The changelog denotes the two Jira issues closed by this release. You can find Openfire build artifacts available for download [here](https://github.com/igniterealtime/Openfire/rel … ⌘ Read more

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GoCN 每日新闻(2022-01-04)

GoCN 每日新闻(2022-01-04)
  1. 「GoCN 酷 Go 推荐」go 语言位操作库 — bitsethttps://mp.weixin.qq.com/s/UcuKgKnt4fwrg3c-UHc3sw
  2. Go 通过 Map/Filter/ForEach 等流式 API 高效处理数据https://mp.weixin.qq.com/s/7ATm_Zu7ib9MXf8ugy3RcA
  3. 优化 Go 二进制文件的大小[https://prog.world/optimizing-the-size-of-the-go-binary](https://prog.world/optimizing-the-si … ⌘ Read more

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Ignite Realtime Blog: Openfire 4.6.7 released (Log4j 2.17.1 only change)
Openfire 4.6.7 has been released with only a single change to bump the bundled log4j library to version 2.17.1. Whilst we do not believe Openfire to be vulnerable to the CVEs associated with the log4j 2.17.0 and 2.17.1 releases, we realize that many folks are running naive security scanners that are simply checking for bundled jar versions.

The [changelog](https://download.igniterealtime.org/open … ⌘ Read more

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Excelize 发布 2.5.0 版本,Go 语言 Excel 文档基础库

Image

Excelize 是 Go 语言编写的用于操作 Office Excel 文档基础库,基于 ECMA-376,ISO/IEC 29500 国际标准。可以使用它来读取、写入由 Microsoft Excel™ 2007 及以上版本创建的电子表格文档。支持 XLSX / XLSM / XLTM 等多种文档格式,高度兼容带有样式、图片 … ⌘ Read more

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go 语言位操作库 bitset
bitset库 实现了 bitsets 数据结构,这是一种正整数和布尔值映射关系的结构,它比 map[uint]bool 更高效

什么是 bitsets

bitsets 基本思想是用一个 bit 位来标记某个元素对应的 Value,每一位表示一个数,1 表示存在,0 表示不存在
比如我要表示 1, 3, 7 这 3 个数

  1. 构造一个空白 bitsets:00000000
  2. 每位代表的值如下:76543210
  3. 想要表示的值标记 1:10001010
有什么好处?

�� … ⌘ Read more

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GoCN 每日新闻 (2021-12-30)
GoCN 每日新闻 (2021-12-30)

  1. 如何在 Go 中将 [] byte 转换为 io.Reader?https://mp.weixin.qq.com/s/nFkob92GOs6Gp75pxA5wCQ
  2. 彻底搞懂 Kubernetes 中的 Eventshttps://mp.weixin.qq.com/s/QRIck4M1-CJVrVDoJEsjQA
  3. 对比 Rust 和 Go 对二进制数据处理[https://medium.com/@protiumx/advent-of-code-rust-go-and-binary-operators-7dd03057c134](https://medium.com/@protiumx/advent-o … ⌘ Read more

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web0?
With all the hype (or bullshit) about “web3”, it’s good to see a counter movement as well. Whether this site is really “web0” or just pre-“Web 2++” (my term for websites overloaded with frameworks, JavaScript and CSS) remains to be debated… ⌘ Read more

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GoCN 每日新闻 (2021-12-24)
GoCN 每日新闻 (2021-12-24)

  1. ccgo 更新添加 macOS clang 支持https://pkg.go.dev/modernc.org/ccgo/v3
  2. 一个简单强大的 SSH 秘钥管理器https://golangexample.com/skm-a-simple-and-powerful-ssh-keys-manager/
  3. golang 会缓存 dns 吗[https://www.reddit.com/r/golang/comments/rn9b6d/is_golang_caching_dns/](https://www.reddit.com/r/golang/comments/rn9b6d/is_golang_ca … ⌘ Read more

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《真·简单》Golang 轻量级桌面程序 wails 库(圣诞节限定)

Golang 轻量级桌面程序 wails2 教学 推荐理由

不依赖 cgo! 不依赖 cgo! 不依赖 cgo!真的不依赖 cgo,且跨平台,原生渲染 无嵌入式浏览器,轻量级,生成的文件很小,而且只有一个可执行文件就可运行。

功能介绍
  1. 后端使用标准 Go
  2. 使用任意前端技术构建 UI 界面
  3. 快速为您的 Go 应用生成 Vue、Vuetify、React 前端代码
  4. 通过简 … ⌘ Read more

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GoCN 每日新闻(2021-12-22)

GoCN 每日新闻(2021-12-22)
  1. 使用 Go 和 SQLite 构建生产应用程序
  2. 使用 context.Context 模拟 API 客户端https://incident.io/blog/golang-client-mocks
  3. 一种可嵌入的 Go 脚本语言,实现了逻辑编程语言 Prologhttps://github.com/ichiban/prolog
  4. SSA:终于知道编译器偷摸做了哪些事[https://mp.weixin.qq.com/s/nOhMsMeP1pUFEXKAMUzbWg](https://mp.weixin.qq.com/ … ⌘ Read more

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