Alien Mission
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Neil deGrasse Tyson Explains Underwater Volcanoes with Natalie Starkey ⌘ Read more
How Docker Desktop Networking Works Under the Hood
Modern applications make extensive use of networks. At build time it’s common to apt-get/dnf/yum/apk install a package from a Linux distribution’s package repository. At runtime an application may wish to connect() to an internal postgres or mysql database to persist some state, while also calling listen() and accept() to expose APIs and UIs over TCP […]
The post [How Docker Desktop Networking Works Under the Hood](https://www.docker.com … ⌘ Read more
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JMP: Newsletter: Snikket Hosting, Billing Overage Limits
Hi everyone!
Welcome to the latest edition of your pseudo-monthly JMP update!
In case it’s been a while since you checked out JMP, here’s a refresher: JMP lets you send and receive text and picture messages (and calls) through a real phone number right from your computer, tablet, phone, or anything else that has a Jabber client. Among other things, JMP has these features: Your phone number on every device; Multiple phone numbers, one app; Fr … ⌘ Read more
Behind The Scenes 2021 (Patreon Exclusive) ⌘ Read more
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the filter is not just having read marx, it is having read marx and still understanding him
Highlights from Git 2.35
The open source Git project just released Git 2.35. Here’s GitHub’s look at some of the most interesting features and changes introduced since last time. ⌘ Read more
Prosodical Thoughts: Prosody 0.11.13 released
We are pleased to announce a new minor release from our stable branch.
This is a(nother!) release for our stable branch to fix a memory leak caused
by the security fix. Deployments using websockets, SQL storage and possibly
other configurations may have noticed increasing memory usage after upgrading
to 0.11.12. This is resolved by this new release.
A summary of changes in this release:
Minor changesFile Sharing with Docker Desktop
One of the topics users of Docker Desktop often ask us about is file sharing. How do I see my source code inside my container? What’s the difference between a volume and a bind mount? Why is file sharing slower than on Linux, and how can I speed it up? In this blog post, I’ll […]
The post File Sharing with Docker Desktop appeared first on Docker Blog. ⌘ Read more
Bitcoin “Cult”
I have noticed that some people I respect have jumped on the bandwagon of calling Bitcoin a cult. I will agree with the word cult even know it is ment to be pejorative, giving the movement a religion like meaning. Is is a cult in the sense that it is a movement based on philosophical […] ⌘ Read more
Alien Observers
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@benk@kwiecien.us I am using jenny (we chatted a bit on IRC earlier today). I have been using it for over five months now, I think. It is truly a joy to use, specially because you can use the power of Mutt/NeoMutt to read your twts.
Release Radar · December 2021 Edition
Many of us were wrapping up projects, emails, events, and getting ready for Christmas. While we were all busy getting ready for the festive season, our community was still hard at work shipping open source ⌘ Read more
The Snow Show: Making Snowflakes with Neil deGrasse Tyson ⌘ Read more
K-d Trees - Computerphile ⌘ Read more
I counted everything I own as a minimalist. ⌘ Read more
Docker Captain Take 5 – Thomas Shaw
Docker Captains are select members of the community that are both experts in their field and are passionate about sharing their Docker knowledge with others. “Docker Captains Take 5” is a regular blog series where we get a closer look at our Captains and ask them the same broad set of questions ranging from what […]
The post Docker Captain Take 5 – Thomas Shaw appeared first on [Docker Blog](https://www. … ⌘ Read more
GoCN 每日新闻 (2022-01-21)
GoCN 每日新闻 (2022-01-21)
- stream: go 语言并发通信设计模式的泛型实现https://github.com/devnw/stream
- 一个比” ldflags” 更好的方式来添加构建版本号到 go 二进制的方式：https://levelup.gitconnected.com/a-better-way-than-ldflags-to-add-a-build-version-to-your-go-binaries-2258ce419d2d
- 怎么处理 HTTP 错误” context canceld”[https://www.reddit.com/r/golang/comments/s7o5ay/investigating_context_canceled_http_err … ⌘ Read more
TiDB 在国信证券海量数据高并发场景中的实践
作者介绍
陈培新，参与国信证券基础平台研发工作（DevOps、微服务治理、Serverless）
国信证券是一家全国性大型综合类证券公司，在 118 个城市和地区共设有 57 家分公司、185 家营业部，根据中证协发布的数据，近年来国信证券的总资产、净资产、净资本、营业收入、净利润等核心指标排名行业前列。
国信证券从 2020 年 6 月开始接触 TiDB，从技术预研到第一个业务上线大约花了半年时间。第一个上线的业务是金太阳帐单，后面陆续在数据中台、服务观测等系统中应用。从只在东莞主机房的 TiDB 部署到 2021 年 9 月实现 TiDB 多机房的部署，并启动国产海光 x86 服务器的试点工作，国信证券在开源 NewSQL 数据库的探索和应用层面，积累了丰富的实践经验。目前， 国信证券共有 7 个 TiDB 集群，节点数量 109 个，最大表 100 亿，支撑了托管、经纪和自营等业务。
从 0 到 1，国信金太阳引入 TiDB
国信金太阳提供证券交易、理财和资讯相关的服务。我们使用证券软件最主要的功能就是交易，在做交易的时候会比较关注收益率以及什么时候买卖股票。当前国信金太阳的 … ⌘ Read more
Hydraulic Analogy
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Peter Saint-Andre: Philosophies and Ways of Life
In his book What Is Ancient Philosophy?, Pierre Hadot almost singlehandedly resurrected the ancient conception of philosophy as a way of life. Consider this observation about the philosophical schools of Greece and Rome: “For us moderns, the notion of a philosophical school evokes only the idea of a doctrinal tendency or theoretical position. Things were very different in antiquity. No university obligations oriented the future philosopher toward a specific school; instead, the futur … ⌘ Read more
It’s Now Illegal to Criticise the Government ⌘ Read more
Social Networks & Ending the Pandemic with Neil deGrasse Tyson & Nicholas Christakis ⌘ Read more
How to Purchase a Docker Subscription from a Reseller
With the grace period for the new Docker subscription service agreement ending very soon on January 31, 2022, we want to make it easy for customers to use their preferred reseller to purchase a Docker subscription. That’s why we recently announced that your preferred reseller can now purchase a Docker Business subscription through Nuaware. That’s […]
The post [How to Purchase a Docker Subscription from a Reseller](https://www.docke … ⌘ Read more
Open source creates value, but how do you measure it?
When digital infrastructure is overlooked by governments, it isn’t just a missed opportunity: policies may inadvertently endanger open source collaboration. ⌘ Read more
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引领中国分布式数据库企业技术创新力，平凯星辰获得赛迪顾问报告推荐
近日，赛迪顾问正式发布《2021 中国分布式数据库最具成长价值企业研究报告》， 报告从技术创新力和市场影响力两个维度对中国分布式数据库创新企业进行评估，平凯星辰在技术创新力的维度排名第一。
报告指出，平凯星辰将开源作为长期核心战略，坚信开源是当今基础软件领域取得世界范围内成功的最佳路径。目前 TiDB 项目在 GitHub 上已总计获得超过 30,000+ 颗星，累计超过 1600 位开源贡献者，是全球数据库活跃度排名前三的开源项目，也是中国排名前 … ⌘ Read more
GoCN 每日新闻（2022-01-20）
- 从 CPU 角度理解 Go 中的结构体内存对齐https://gocn.vip/topics/20967
- 博客 Go beyond workhttps://changelog.com/gotime/212
- 如何绘制随时间变化的 Go 测试覆盖率https://osinet.fr/go/en/articles/plotting-go-test-coverage/
- Redix v5 一个简单的 KeyValue 存储系统https://github.com/alash3al/redix?_v=5.0.0
- 既然 IP 层会分片，为什么 TCP 层也还要分段[https://mp.weixin.qq.com/s/0boFt8cOAbmjH2IRr7XtY … ⌘ Read more
The Feds Are Investigating a YouTuber Accused of Crashing a Plane For Views
A YouTuber and former Olympic snowboarder has been accused of crashing his plane on purpose for clicks, and the FAA has opened an investigation to get to the bottom of the growing mess. The Drive reports: Trevor Jacob has been the subject of online criticism after posting a YouTube video where he parachuted from a Taylorcraf … ⌘ Read more
从 CPU 角度理解 Go 中的结构体内存对齐
大家好，我是 Go 学堂的渔夫子。今天跟大家聊聊结构体字段内存对齐相关的知识点。
原文链接： https://mp.weixin.qq.com/s/H3399AYE1MjaDRSllhaPrw
大家在写 Go 时有没有注意过，一个 struct 所占的空间不见得等于各个字段加起来的空间之和，甚至有时候把字段的顺序调整一下，struct 的所占空间又有不同的结果。
本文就从 cpu 读取内存的角度来谈谈内存对齐的原理。
01 结构体字段对齐示例
我们先从一个示例开始。T1 结构体，共有 3 个字段，类型分别为 int8,int64,int32。所以变量 t1 所属的类型占用的空间应该是 1+8+4=13 字节。但运行程序后，实际上是 24 字节。和我们计算的 13 字节不一样啊。如果我们把该结构体的字段调整成 T2 那样，结果是 16 字节。但和 13 字节还是不一样。这是为什么呢？
”`
type T1 struct {
f1 int8 // 1 byte
f2 int64 // ... ⌘ [Read more](https://gocn.vip/topics/20967)```
** A quick and dirty intro to the .pbm file format **
I’ve been fiddling with writing programs that draw pictures. I started with PostScript for this, but have since moved to writing programs that output in the .pbm format.
My goal here is to write noise to a .pbm file.
A .pbm file is the lowest common denominator among image file formats.
An example of the format,
”`hljs plaintext
P1
5 5
1 0 1 0 1
0 1 0 1 0
1 0 1 … ⌘ Read more”`
Ignite Realtime Blog: Openfire 4.7.0 has been released!
The Ignite Realtime Community is elated to be able to announce the release of Openfire version 4.7.0!
This release is the first non-patch release in more than a year, which brings a healthy amount of new features, as well as bug fixes.
I’d like to explicitly thank the many people in the community that have supported this release: not only were a significant amount of code contributions provided, the feedback that we get in our [chatr … ⌘ Read more
Reducing security risk in open source software with GitHub Actions and OpenSSF Scorecards V4
We’re excited to announce the V4 release of the OpenSSF’s Scorecard project in partnership with Google. ⌘ Read more
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GoCN 每日新闻（2022-01-19）
GoCN 每日新闻（2022-01-19）- Go1.18 新特性：多 Module 工作区模式https://mp.weixin.qq.com/s/Aa9s_ORDVfzbj915aJD5_w
- Go 中的可视化 - 绘制股票信息https://www.ardanlabs.com/blog/2022/01/visualizations-in-go.html
- 带你彻底击溃跳表原理及其 Golang 实现！（内含图解） https://mp.weixin.qq.com/s/5wrHQz_LqeQn3NLuF8yu0A
- go-zero 对接分布式事务 dtm 保姆式教程[https://github.com/Mikaelemmmm/gozerodtm](h … ⌘ Read more
只有天空才是你的极限，我们热爱探索的过程并沉浸其中丨图数据库 TiMatch 团队访谈
只有天空才是你的极限，我们热爱探索的过程并沉浸其中
Hackathon 本身带给我们的是一次全新的探索，并不只是一队人有一个明确的目标，花几天时间写代码，那其实是很无聊的。探索的本身让我们发现，越探索越能找到更新、更好、更优雅的解决办法，我们热爱这个探索的过程并沉浸其中…… —— TiMatch 赛队
战队成员之一柏佳辰是一个爱画画、爱摩托车、喜欢读《理想国》，建筑学出身的程序员。
在 TiDB Hackathon 2020 赛事中，TiGraph 项目在 TiDB 中实现了一套新的 Key-Value 编码来引入图模式，处理传统关系型数据库难以覆盖的图数据分析场景，实现了 TiDB 在四度人脉的计算性能大幅提升，夺得了二等奖。
在刚刚收官的 TiDB Hackathon 2021 赛事中，TiMatch 在去年项目的基础上做了一次进化升级 … ⌘ Read more
Captain Picard Tea Order
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Neil deGrasse Tyson Explains Banking Turns ⌘ Read more
How open source is supporting NASA’s new eyes in space
With the successful liftoff of the James Webb Space Telescope, we ask our very own Arfon Smith about the history of open source and space science. ⌘ Read more
GoCN 每日新闻（2022-01-18）
- 超实用教程！一探 Golang 怎样践行 Clean Architecture？https://www.tuicool.com/articles/fiuQZvz
- Uber：大规模、半自动化 Go GC 调优https://mp.weixin.qq.com/s/XithQarYmXHbPhtVzhNm-w
- Go 耗费 12 年才引入泛型，是政治，还是技术问题？https://www.tuicool.com/articles/bINJvyr
- Pulsar vs Kafka？一文掌握高性能消息组件 Pulsar 基础知识https://segmentfault.com/a/1190000041297325
- Go Errors 详解[h … ⌘ Read more
[上海] 上海鑫农物联科技有限公司招聘 golang 工程师
上海鑫农物联科技有限公司成立于 2020 年 3 月份，是国家 863 软件园 (上海基地) 2020 年重点孵化项目，是由原霍尼韦尔 “智慧农业” 项目的两位创始人共同创立的互联网农业高科技公司，简称 “鑫农物联”。该 “智慧农业” 项目是霍尼韦尔从 2016 年至 2019 年间在中国孵化的几十个创新项目中最成功的。
鑫农物联成员绝大多数来自于霍尼韦尔，拥有深厚扎实的工业互联网、物联网、云计算、大数据、人工智能等技术背景；同时与多位资深农业专家和新媒体数据运营专家通力合作。
鑫农物联把霍尼韦尔国际领先的工业互联网技术与产品运用到农业生产中，同时集成国内外先进的农业生产设备，为满足中国农业种植、养殖和农产品销售发展的迫切需要，而致力于提供智慧种植、智慧养殖和农业数据运营三大垂直领域解决方案的设计、推广与实施。
鑫农物联致力于 “赋能农企和农户，帮助他们更成功” 为使命，专注于 “科技服务” 和 “技术赋能”。
岗位职责：
- 参与物联网平台服务端架构设计；
- 负责物联网平台服务端相关接口开发和维护；
- 完成部分 devops 相关工作；
任职要求：
- 熟练掌握 golang 语言；
2 … ⌘ Read more
GoCN 每日新闻 (2022-01-18)
GoCN 每日新闻 (2022-01-18)
- GoFrame 框架: 快速创建静态文件下载 Web 服务https://my.oschina.net/u/4955601/blog/5400313
- Kubernetes HPA 基于 Prometheus 自定义指标的可控弹性伸缩https://my.oschina.net/u/5110404/blog/5401779
- 面试官提问三个 Go 接口的概念， 10 年 gopher 竟无言以对https://colobu.com/2022/01/16/three-new-concepts-of-go-interface-since-1-18/
- chaos-mesh: K8s 的 Chaos 工程平台[htt … ⌘ Read more
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他来了，他来了，GopherChina 2022 带着邀请走来了
一年一度的 GopherChina 大会 is coming～
GopherChina 2022 今年举办地依旧选在了我们的首都北京，大会现场还是那个熟悉的地方
，作为 Gopher China 即将举办的第八届大会，我们希望以更有趣好玩的形式呈现给大家，当然内容依然是大会的重重中之重，所以快把你所心仪的选题分享给我们吧，我们已经做好了一个准备住的大动作了 ～时间：北京市海淀区丰智东路 13 号 (朗丽兹西山花园酒店)
地点：2022.06.11 - 2022.06.12
选址虽然还是那个老地方，但是近几年，Go … ⌘ Read more
关于 Go 代码结构的思考
关于 Go 代码结构的思考- 原文地址： https://changelog.com/posts/on-go-application-structure
- 原文作者：Jon Calhoun
- 本文永久链接： https://github.com/gocn/translator/blob/master/2022/w2_Thoughts_on_how_to_structure_Go_code.md
- 译者： lsj1342
- 校对： xkkhy、 zhuyaguang
\*\*\*
… ⌘ Read more
Web3 | No Mercy / No Malice ⌘ Read more
How to Green Screen on the YoloBox Pro
This step-by-step guide will show you how to use the chroma key feature on the YoloBox Pro to green screen yourself onto picture backgrounds and videos, or even add external graphics from a computer. ⌘ Read more
friendlyjordies Attacks Labor ⌘ Read more
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如何处理初始化一个 mod 时默认配置文件的路径问题？
假设有一个 mod 项目，希望在该项目被引入时通过一个该 mod 项目下的默认配置文件初始化一些参数，应该如何获取配置文件的路径？ ⌘ Read more
Hypothesis Generation
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Peter Saint-Andre: MLK and Personalism
In my recent post on idealism and identity, I mentioned my attraction to the philosophy of personalism, with its emphasis on human dignity. It is perhaps a little-known fact that Martin Luther King, Jr., was greatly influenced by that very philosophy. Early in life he ventured north to study at Boston University, then the center of personalist thought in America, where he completed his doctorate under theologian Edgar Sheffield Brightman. We can see the deep influence of personalism on King’s … ⌘ Read more
[47°09′41″S, 126°43′51″W] Raw reading: 0x61E47942, offset +/-5
Let’s see whether the DSL provider change goes smoothly tonight / tomorrow morning, or if I have to use my mobile hotspot tomorrow. ⌘ Read more
GoCN 每日新闻 (2022-01-16)
GoCN 每日新闻 (2022-01-16)- Golang 1.18 官方 Tutorial: 开始使用泛型https://juejin.cn/post/7053427624902656030
- 使用 Go 语言从 0 到 1 实现一个 CNI 插件https://mp.weixin.qq.com/s/lUsRww74DZlRU3vTYbfFbQ
- 深入浅出 Golang 资源嵌入方案：前篇https://mp.weixin.qq.com/s/1wlaGMXvk_uGGjAr7BjjlQ
- Go 静态编译机制https://juejin.cn/post/7053450610386468894
- Golan … ⌘ Read more
GoCN 每日新闻 (2022-1-15)
- https://jogendra.dev/writing-maintainable-go-code Writing maintainable Go code
- https://mp.weixin.qq.com/s/h8vhy8IJKnA8aNbTlCoQtg 理解 go 中空结构体的应用和实现原理
- https://juejin.cn/post/7053109648223633438 Go 并发写 map 产生错误能够通过 recover() 恢复吗？
- [https://soulteary.com/2022/01/15/explain-the-golang-resource-embedding-solution-part-1.html](https://soulteary.com/2022/01/15/exp … ⌘ Read more
I just signed my own first apartment lease. 🎉 I will now have a lot to do over the next few months. 😅 ⌘ Read more
Golang 的 Elastic 链接库
Golang 的 Elastic 链接库 背景介绍Elasticsearch 是一个分布式、高扩展、高实时的搜索与数据分析引擎，用于海量文档的搜索。有些项目会将 Elasticsearch 当做存储海量数据的数据库使用，可见其查询性能之高效。作为面向文档的搜索引擎，Elasticsearch 比起传统数据库更偏向于结构化数据的高效查询，其独特的倒排索引更能将查询性能提升至极致。在大数据微服务时代，Elasticsearch 在海量数据搜索、数据挖掘、人工智能领域都起到了关键作用。
安装go get <span class="s2">"github.com/olivere/elastic/v7"</span>
Elasticsearch 的数据来源通常来自于 Logstash 等数据采集中间件，作为 golang 项目来说，其查询功能的使用更加普遍。
此文章以 V7 版本为例来介绍如何使用 golang 对 Elasticsearch 进行查询。
<span class="k">import</span> <span cla ... ⌘ [Read more](https://gocn.vip/topics/20956)Peter Saint-Andre: Idealism and Identity
Personal identity is a deep, and deeply meaningful, subject: at some level, what’s more important than what makes you you? Paradoxically, throughout history and across cultures, often personal identity has been a social construct, tied closely to tribe, clan, family, ethnic group, race, caste, class, societal role, and so on - usually in opposition to some Other (“I’m a Capulet, not a Montague”, “I’m a proletarian, not a bourgeois”, etc.)…. ⌘ Read more
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
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
GoCN 每日新闻（2022-01-14）
- 《Go 组件设计与实现》-netpoll 的总结https://www.cnblogs.com/codexiaoyi/p/15798780.html
- 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/
- 基于 etcd 实现大规模服务治理应用实战https://mp.weixin.qq.com/s/zOZrCNZ9X6IyKxzRMeReWg
- 勒索软件正在用 Go 重写，用于联合攻击 Window … ⌘ Read more
Video: Q&A
I put out a tweet asking if anyone would be interested in a Q&A, and to my surprise, I got many Q’s to A. ⌘ Read more
[47°09′31″S, 126°43′28″W] Reading: 0.15 Sv
3 小时简明 go 入门视频，英文版
感觉设计很好，各种动画，以一个简单的例子为线索，介绍基础语法。
现在 go 教程很多，这个是我看到最好的。
英文版的，可以顺便练习听力。
GoCN 每日新闻 (2021-12-31)
- 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
- Golang 与非对称加密https://www.ssgeek.com/post/golang-yu-fei-dui-cheng-jia-mi
- 一文搞懂 Docker、Containerd、RunC 间的联系和区别https://mp.weixin.qq.com/s/kVh_EXGeMy_UI6qIgbmsGQ
- 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
“爆到天际线” - TiDB 2021 Hackathon 决赛不负责任点评
作者介绍：唐刘，PingCAP VP of Engineering，TiDB Hackathon 2021 特邀评委。
TiDB 2021 Hackathon 终于落下帷幕，最开始我还担心，今年 Hackathon 还有啥东西能出来，结果却大大超出我的预期，很多项目真的能用惊艳来形容，大家都在自嘲，说『内卷得太厉害』。作为评委，全程参与了预赛内核组以及决赛的答辩，还是有很多感触的，之前已经写了一篇预赛的点评（点击文末 “阅读原文” 即可查看），这次也对决赛做一次不负责任的点评。
决赛这次有 20 个项目，我大概分几个维度做一个统一介绍。
性能/功能增强
这次在 TiDB 内核上，做的不少性能提升功能真的很惊艳，因为我预赛点评的主要是内核组的东西，所以在这里简单进行一下汇总。
增量 Analytic Table
这个功能通过 Region Cache 统计信息的方式来加速全表的 analyze，在表越大的情况下，收益会越加明显。一方面加速了 analyze 的速度，另外一方面也能缓解 analyze 造成的大量 IO 和 CPU 开销，降低了系统的压力。不过这个实现有一个前提假设，就 … ⌘ Read more
Spinthariscope
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Top-rated entries from Game Off 2021
Here are the top games created in our annual game jam as rated and reviewed by the developers that made them. Game On! 🤘🏻 ⌘ Read more
True Crime & Forensic Pathology with Neil deGrasse Tyson ⌘ Read more
How five open source communities are using GitHub Discussions
From answering questions about a new release to fielding feature requests, here’s how five open source communities use GitHub Discussions. ⌘ Read more
Introducing SSO for Docker Business
Single Sign-on (SSO) for Docker is now live! By enabling SSO, large organizations and enterprises can easily automate the onboarding and management of Docker users at scale. Users can authenticate using their organization’s standard identity provider (IdP). SSO is one of our most widely requested features, so we’re excited to ship this to our Docker […]
The post Introducing SSO for Docker Business ap … ⌘ Read more
Prosodical Thoughts: Prosody 0.11.12 released
We are pleased to announce a new minor release from our stable branch.
This is a security release that addresses a denial-of-service vulnerability in
Prosody’s mod_websocket. For more information, refer to the
20220113 advisory.
A summary of changes in this release:
Security- util.xml: Do not allow doctypes, comments or processing instructions
As usual, download instructions for many platforms can be f … ⌘ Read more
** ** ⌘ Read more
[47°09′19″S, 126°43′28″W] Reading: 0.95 Sv
The Open Source Software Security Summit: securing the world’s code together
My colleague Stormy Peters and I are proud to represent GitHub at the White House’s Open Source Software Security Summit to share how securing open source begins by empowering developers. ⌘ Read more
GoCN 每日新闻 (2022-01-13)
GoCN 每日新闻 (2022-01-13)
- Golang《基于 MIME 协议的邮件信息解析》部分实现https://gocn.vip/topics/20948
- 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/
- 更多的并行,并不等同更高的性能https://convey.earth/conversation?id=44
- 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
[47°09′51″S, 126°43′26″W] Reading: 1.30000 PPM
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。
- 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。
- 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。
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)开源走向世界（下）：从数据库技术演进看开源力量丨 BDTC 2021
本文内容根据 PingCAP 高级副总裁范若晗在 BDTC 2021 的主题演讲：“开源走向世界” 整理而成，从协作方式和技术演进两个角度，分享了 “开源” 和 “全球化” 之间相互关联，密不可分的关系，分为上下两篇，上篇介绍了开源如何构建全球化的舞台，本篇主题为：从数据库技术演进看开源力量
我们认为，数据技术演进的驱动力总结起来，主要包括三个方面：理论基础推动软件创新、基础设施保障软件能力的实现、业务需求真正打磨了技术的不断工程化、产品化，是产品真正的 “用武之地”。
数据库演进历史——基础理论驱动
按照时间和功能维度，我们将数据生态做了划分，大致包括 SQL 生态，大数据生态，NoSQL 生态，NewSQL 生态，以及 SQL 的云化生态。每个生态的演进，离不开基础理论的发展。
1970 年 IBM 的关系型数据库理论 Relational Model 包括 System R 原型产品的问世，为 Oracle、DB2、MicroSoft SQL Server 这些商业数据库的诞生奠定了基础。而后 MySQL、PostgreSQL 以开源这一形态获得快速发展和全球最广泛的应用。
200 … ⌘ Read more