React v17.0 Release Candidate: No New Features – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. Today, we are publishing the first Release Candidate for React 17. It has been two and a half years since the previous major release of React, which is a long time even by our standards! In this blog post, we will describe the role of this major release, what changes you can expect in it, and how you can try this relea
Load Balancers plays a key role in Web Architecture. They allow distributing load among a set of backends. This makes services more scalable. Also since there are multiple backends configured the service become highly available as load balancer can pick up a working server in case of a failure. After playing with professional Load Balancers like NGINX I tried creating a simple Load Balancer for fu
Optimize long tasks Stay organized with collections Save and categorize content based on your preferences. You've been told "don't block the main thread" and "break up your long tasks", but what does it mean to do those things? Common advice for keeping JavaScript apps fast tends to boil down to the following advice: "Don't block the main thread." "Break up your long tasks." This is great advice,
Performance comparison: counting words in Python, Go, C++, C, AWK, Forth, and Rust
Performance comparison: counting words in Python, Go, C++, C, AWK, Forth, and Rust March 2021 Summary: I describe a simple interview problem (counting frequencies of unique words), solve it in various languages, and compare performance across them. For each language, I’ve included a simple, idiomatic solution as well as a more optimized approach via profiling. Go to: Constraints | Python Go C++ C
Why I Quit Google’s WebAssembly Team, And How It Made Me Sick
Why I Quit Google’s WebAssembly Team, And How It Made Me Sick I joined Google in early 2015 to work on the V8 team as one of the first authors of the WebAssembly specification. This is a partial story of what went wrong with the process and how it permanently damaged me. My hope is that this story will help people recognize toxic cultures in their own workplaces, or help new hires have a better ca
Before there was GraphQL, there was REST. In recent years, REST has become the dominant API style for building backend web services. With REST, you could signal the type of request we want to make (ex: GET, POST, PUT, or DELETE) and the resource we’d like to fetch or interact with (ex: /api/pets/1) using an HTTP method and a URL. It’s a great approach (and one we initially used at StockX for sever
React v17.0 – React Blog
This blog site has been archived. Go to react.dev/blog to see the recent posts. Today, we are releasing React 17! We’ve written at length about the role of the React 17 release and the changes it contains in the React 17 RC blog post. This post is a brief summary of it, so if you’ve already read the RC post, you can skip this one. No New Features The React 17 release is unusual because it doesn’t
WebKit Features in Safari 16.4
Mar 27, 2023 by Patrick Angle, Marcos Caceres, Razvan Caliman, Jon Davis, Brady Eidson, Timothy Hatcher, Ryosuke Niwa, and Jen Simmons ContentsWeb Push on iOS and iPadOSImprovements for Web AppsWeb ComponentsCSSHTMLJavaScript and WebAssemblyWeb APIImages, Video, and AudioWKWebViewDeveloper ToolingWeb InspectorSafari Web ExtensionsSafari Content BlockersNew Restrictions in Lockdown ModeMore Improve
Sorbet Compiler: An experimental, ahead-of-time compiler for Ruby · Sorbet
For the past year, the Sorbet team has been working on an experimental, ahead-of-time compiler for Ruby, powered by Sorbet and LLVM. Today we’re sharing the source code for it. It lives alongside the existing code for Sorbet on GitHub, mostly in the compiler/ folder: → https://github.com/sorbet/sorbet/tree/master/compiler/ We want to be clear up front: the code is nowhere near ready for external u
The problem with Git flow
The problem with Git flow Learn why Git flow complicates the lifecycle and discover an alternative to streamline development. Sometimes, you can have too much of a good thing. That’s certainly true with Git flow, a well-known software development workflow that offers several options but can bog down users. We developed GitLab Flow as the solution to eliminate messy complexity and streamline the de
Windows Terminal comes with a lot of features that allow you to customize it and interact with it in a way that feels most comfortable to you. Let’s run through some tips and tricks that could help you set up your terminal in a way that’s perfect for you. At the time of this blog post, Windows Terminal is on version 1.3 and Windows Terminal Preview is on version 1.4. On first launch When you first
In this post I'll outline 8 image loading optimization techniques to minimize both the bandwidth used for loading images on the web and the CPU usage for image display. I'll present them in the form of an annotated HTML example to make it easy for folks to reproduce the results. Some of these techniques are more established, while others are somewhat novel. Ideally, your favorite mechanism for pub
At Airplane, we collect observability data from our own systems as well as remote “agents” that are running in our customers’ infrastructure. The associated outputs, which include the standard “three pillars of observability” (logs, metrics, and traces) are essential for us to monitor our infrastructure and also help customers debug problems in theirs. Over the last year, we’ve made a concerted ef
“Should an epidemic come,” Amabié is said to have uttered, “draw me and show me to the people.” Then it sank beneath the waves.Art work by Shunsuke Satake Sometimes it seems as if Japan’s human population is outnumbered by cute characters. A few, such as Hello Kitty and Pikachu, have achieved international superstardom. But many more quietly populate the daily lives of citizens. Illustrated signs
GraphQL 2021
Today marks the first release of the GraphQL spec ratified by the GraphQL Foundation. This is the culmination of three years of work, both technical and procedural. This is a proud moment and one worth celebrating. What took so long?The last ratified spec release was over three years ago, in June 2018. What took so long for this release? Certainly a worldwide pandemic didnʼt help our collective fo
Orbit, the Open Runtime Binary Instrumentation Tool is a standalone native application profiler for Windows and Linux. It supports native applications written in languages such as C, C++, Rust, or Go. Its main purpose is to help developers identify the performance bottlenecks of a complex application. Orbit can be also used to visualize the execution flow of such applications. The key differentiat
Reverse Engineering the source code of the BioNTech/Pfizer SARS-CoV-2 Vaccine - Bert Hubert's writings
Reverse Engineering the source code of the BioNTech/Pfizer SARS-CoV-2 Vaccine Translations: ελληνικά / عربى / 中文 (Weixin video, Youtube video) / 粵文 / bahasa Indonesia / český / Català / český / Deutsch / Español / 2فارسی / فارسی / Français / עִברִית / Hrvatski / Italiano / Magyar / Nederlands / 日本語 / 日本語 2 / नेपाली / Polskie / русский / Português / Română / Slovensky / Slovenščina / Srpski / Türk
Launch VS Code Quick Open (Ctrl+P), paste the following command, and press enter. CodeTour 🗺️ CodeTour is a Visual Studio Code extension, which allows you to record and play back guided walkthroughs of your codebases. It's like a table of contents, that can make it easier to onboard (or re-board!) to a new project/feature area, visualize bug reports, or understand the context of a code review/PR
Facebook.com launched in 2004 as a simple, server-rendered PHP website. Over time, we’ve added layer upon layer of new technology to deliver more interactive features. Each of these new features and technologies incrementally slowed the site down and made it harder to maintain. This made it harder to introduce new experiences. Features like dark mode and saving your place in News Feed had no strai
An Interview With Linus Torvalds: Linux and Git - Part 1 30 Years Of Linux
Jeremy founded Tag1 Consulting in 2007. He has been a contributing core Drupal developer since 2002, and helped establish Drupal as a successful CMS through the early popularity of his personal blog, KernelTrap.org. Over the years, he authored and maintained the core statistics module and throttle module, as well as the pager logic and the initial Drupal 5 installer. He continues to contribute to
原典主義者が語るUNIX哲学的面倒臭さ
アーカイブ2022年8月 (1)2022年2月 (1)2021年11月 (1)2021年9月 (1)2021年5月 (1)2021年3月 (1)2021年1月 (1)2020年12月 (1)2020年11月 (2)2020年10月 (3)2020年9月 (1)2020年8月 (3)2020年7月 (1)2020年6月 (2)2020年5月 (4)2020年4月 (2)2020年3月 (2)2020年2月 (1)2020年1月 (1)2019年12月 (4)2019年11月 (3)2019年10月 (5)2019年9月 (4)2019年8月 (5)2019年7月 (6)2019年6月 (7)2019年5月 (7) CentOS8で初めてlsのクォート機能を見たとき、真っ先に思い出したのが「UNIX原典」という本に載っていた「UNIX環境におけるプログラム設計」という論文だった。これは1984
This post is about why we need a coroutine package for Go, and what it would look like. But first, what are coroutines? Every programmer today is familiar with function calls (subroutines): F calls G, which stops F and runs G. G does its work, potentially calling and waiting for other functions, and eventually returns. When G returns, G is gone and F continues running. In this pattern, only one fu
The Four Innovation Phases of Netflix’s Trillions Scale Real-time Data Infrastructure
My name is Zhenzhong Xu. I joined Netflix in 2015 as a founding engineer on the Real-time Data Infrastructure team and later led the Stream Processing Engines team. I developed an interest in real-time data in the early 2010s, and ever since believe there is much value yet to be uncovered. Netflix was a fantastic place to be surrounded by many amazing colleagues. I can’t be more proud of everyone
Introducing workerd: the Open Source Workers runtime2022-09-27 Today I'm proud to introduce the first beta release of workerd, the JavaScript/Wasm runtime based on the same code that powers Cloudflare Workers. workerd is Open Source under the Apache License version 2.0. workerd shares most of its code with the runtime that powers Cloudflare Workers, but with some changes designed to make it more p
User-Agent Client Hints
This specification was published by the Web Platform Incubator Community Group. It is not a W3C Standard nor is it on the W3C Standards Track. Please note that under the W3C Community Contributor License Agreement (CLA) there is a limited opt-out and other conditions apply. Learn more about W3C Community and Business Groups. 1. Introduction This section is non-normative. Today, user agents general
Facebookが10月5日の全面ダウンの詳細を報告。バックボーンの停止がBGP停止となりインターネットから離脱、外部からのアクセスを失いデータセンターに乗り込んで対応
Facebookが10月5日の全面ダウンの詳細を報告。バックボーンの停止がBGP停止となりインターネットから離脱、外部からのアクセスを失いデータセンターに乗り込んで対応 FacebookおよびInstagramなどが日本時間の10月5日午前0時40分頃から午前8時頃まで全面的にダウンした件について、Facebookはその経過や原因についての詳細を「More details about the October 4 outage」として同社のブログで公開しました。 下記は同社CTO Mike Schroepfer氏のツイート。 Yesterday’s outage across our products was a bad one, so we’re sharing some more detail here on exactly what happened, how it happened,
January 30, 2023 In this post, we'll implement a GPT from scratch in just 60 lines of numpy. We'll then load the trained GPT-2 model weights released by OpenAI into our implementation and generate some text. Note: This post assumes familiarity with Python, NumPy, and some basic experience with neural networks. This implementation is for educational purposes, so it's missing lots of features/improv
Kernel Queue: The Complete Guide On The Most Essential Technology For High-Performance I/O When talking about high-performance software we probably think of server software (such as nginx) which processes millions requests from thousands clients in parallel. Surely, what makes server software work so fast is high-end CPU running with huge amount of memory and a very fast network link. But even the
Peter Jay Salzman, Michael Burian, Ori Pomerantz, Bob Mottram, Jim Huang 1 Introduction 1.1 Authorship 1.2 Acknowledgements 1.3 What Is A Kernel Module? 1.4 Kernel module package 1.5 What Modules are in my Kernel? 1.6 Is there a need to download and compile the kernel? 1.7 Before We Begin 2 Headers 3 Examples 4 Hello World 4.1 The Simplest Module 4.2 Hello and Goodbye 4.3 The __init and __exit Mac
Omakub
Turn a fresh Ubuntu installation into a fully-configured, beautiful, and modern web development system by running a single command. That’s the one-line pitch for Omakub. No need to write bespoke configs for every essential tool just to get started or to be up on all the latest command-line tools. Omakub is an opinionated take on what Linux can be at its best. Omakub includes a curated set of appli
Speculation in JavaScriptCore
This post is all about speculative compilation, or just speculation for short, in the context of the JavaScriptCore virtual machine. Speculative compilation is ideal for making dynamic languages, or any language with enough dynamic features, run faster. In this post, we will look at speculation for JavaScript. Historically, this technique or closely related variants has been applied successfully t
By Ammar Khaku IntroductionIn a microservice architecture such as Netflix’s, propagating datasets from a single source to multiple downstream destinations can be challenging. These datasets can represent anything from service configuration to the results of a batch job, are often needed in-memory to optimize access and must be updated as they change over time. One example displaying the need for d
Top 20 Dockerfile best practices
Learn how to prevent security issues and optimize containerized applications by applying a quick set of Dockerfile best practices in your image builds. If you are familiar with containerized applications and microservices, you might have realized that your services might be micro; but detecting vulnerabilities, investigating security issues, and reporting and fixing them after the deployment is ma
How to review code effectively: A GitHub staff engineer’s philosophy
As a staff engineer at GitHub, code review is one of my main focus areas in my day to day work. Over the past eight years, I’ve reviewed more than 7,000 pull requests. Why so many? Because code review is crucial to building good software and another set of eyes can often spot issues you would have otherwise missed. I see code review as one of the most important aspects of my job. In fact, whenever
What Pandemic? Japanese Film Draws a Record Flood of Moviegoers (Published 2020)
TOKYO — In the United States, movies are being shown to seas of empty seats, if theaters are opening at all. But in Japan, an animated film just had the biggest box office weekend in the country’s history — by far. The movie, “Demon Slayer: Mugen Train,” based on a smash-hit Japanese comic book, had been hotly anticipated for months by both fans and an industry desperate to get moviegoers back in
Russ Cox, for the Go team 10 November 2021 Today we celebrate the twelfth birthday of the Go open source release. We have had an eventful year and have a lot to look forward to next year. The most visible change here on the blog is our new home on go.dev, part of consolidating all our Go web sites into a single, coherent site. Another part of that consolidation was replacing godoc.org with pkg.go.
Linux Hardening Guide | Madaidan's Insecurities
Last edited: March 19th, 2022 Linux is not a secure operating system. However, there are steps you can take to improve it. This guide aims to explain how to harden Linux as much as possible for security and privacy. This guide attempts to be distribution-agnostic and is not tied to any specific one. DISCLAIMER: Do not attempt to apply anything in this article if you do not know exactly what you ar
The Future (and the Past) of the Web is Server Side Rendering When servers were in Swiss basements, all they had to serve was static HTML. Maybe, if you were lucky, you got an image. Now, a webpage can be a full-blown app, pulling in data from multiple sources, doing on the fly manipulations, and allowing an end-user full interactivity. This has greatly improved the utility of the web, but at the
Making JavaScript run fast on WebAssembly - Bytecode Alliance
JavaScript in the browser runs many times faster than it did two decades ago. And that happened because the browser vendors spent that time working on intensive performance optimizations. Today, we’re starting work on optimizing JavaScript performance for entirely different environments, where different rules apply. And this is possible because of WebAssembly. We should be clear here—if you’re run
A common refrain is that threads can do everything that async/await can, but simpler. So why would anyone choose async/await? This is a common question that I’ve seen a lot in the Rust community. Frankly, I completely understand where it’s coming from. Rust is a low-level language that doesn’t hide the complexity of coroutines from you. This is in opposition to languages like Go, where async happe
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Let's Create a Simple Load Balancer With Go
Optimize long tasks | Articles | web.dev
Why use GraphQL? | Apollo GraphQL Blog
Windows Terminal Tips and Tricks
Maximally optimizing image loading for the web
Migrating to OpenTelemetry | Airplane
From Japan, a Mascot for the Pandemic
GitHub - google/orbit: C/C++ Performance Profiler
CodeTour - Visual Studio Marketplace
Rebuilding our tech stack for the new Facebook.com
research!rsc: Coroutines for Go
Introducing workerd: the Open Source Workers runtime
GPT in 60 Lines of NumPy | Jay Mody
Kernel Queue: The Complete Guide On The Most Essential Technology For High-Performance I/O
The Linux Kernel Module Programming Guide
How Netflix microservices tackle dataset pub-sub
Twelve Years of Go - The Go Programming Language
The Future (and the Past) of the Web is Server Side Rendering
Why choose async/await over threads?