Building Uber’s Fulfillment Platform for Planet-Scale using Google Cloud Spanner
You’re seeing information for Japan . To see local features and services for another location, select a different city. Show more Introduction The Fulfillment Platform is a foundational Uber domain that enables the rapid scaling of new verticals. The platform handles billions of database transactions each day, ranging from user actions (e.g., a driver starting a trip) and system actions (e.g., cre
April 25, 2022 Four Eras of JavaScript Frameworks April 25, 2022 I started coding primarily in JavaScript back in 2012. I had built a PHP app for a local business from the ground up, a basic CMS and website, and they decided that they wanted to rewrite it and add a bunch of features. The manager of the project wanted me to use .NET, partially because it’s what he knew, but also because he wanted i
US military will no longer use floppy disks to coordinate nuke launches
As we alarmingly learned in 2014, the US military has been using 8-inch floppy disks in an antiquated '70s computer to receive nuclear launch orders from the President. Now, the US strategic command has announced that it has replaced the drives with a "highly-secure solid state digital storage solution," Lt. Col. Jason Rossi told c4isrnet.com. The storage is used in an ancient system called the St
IntroductionIn this article I describe a simple architecture for an early stage SAAS. As a solo founder, I report some choices made to launch Feelback, a small-scale SAAS for collecting users signals about any content. This article will cover the technical side of designing and running a simple SAAS. It will also include some details about coding and evolving the initial feature set ready at launc
怖くない！Flutterでつくる自作ImagePicker[MethodChannel実践入門] - AppBrew Tech Blog
こんにちは、AppBrewの新規事業部の開発責任者を務めております吉野です。 LIPSの開発から離れもう一年が経ち、また夏が訪れようとしています。 この一年で猫を飼い始めたことに加えて変わったことといえばFlutterを新しく触り初めたということがあります。 今回はFlutterでAndroid/iOSの各々のネイティブのコードを実行できるMethodChannelの使い方とそれを実際に使用したImagePicker（ローカルの画像選択画面）の作り方について紹介したいと思います。 今回の記事で、「マルチプラットフォームって結局ネイティブの知識が必要でなんでしょ？」という広くある考え(※要出典)から「これだけ書けばあとはFlutterでできるんだ！」となってもらえたら嬉しく思います。 使用したコードはこちらにおいておきます↓ github.com ↓こんなものをMethodChannelとF
![怖くない！Flutterでつくる自作ImagePicker[MethodChannel実践入門] - AppBrew Tech Blog](https://cdn-ak-scissors.b.st-hatena.com/image/square/f97447098f5fe3667fe76d3a4ffe98015f137306/height=288;version=1;width=512/https%3A%2F%2Fcdn-ak.f.st-hatena.com%2Fimages%2Ffotolife%2Fy%2Fyosshi0774%2F20200707%2F20200707011720.png)
Event-Driven ArchitectureにおけるChoreographyとOrchestration | CyberAgent Developers Blog
はじめに こんにちは、AI事業本部の伊藤(@tsutsun17)です。先日、ラスベガスで開催されたAWS re:invent 2022に現地参加してきました。 AI事業本部では例年、エンジニア数人が現地参加して熱量と学びを得ることができる環境がありました。直近2年は世の情勢もあり現地参加を控えていましたが、今年は現地参加できました。今回は、参加したセッションの中で特に面白かったセッションの一部について、考察や開発しているプロダクトのお話も含めながらご紹介したいと思います。 セッションの概要 まずは、セッションの概要についてご紹介します。 Building next-gen applications with event-driven architectures Event-driven architectures can solve many difficult problems in m
Send feedback BeyondProd Stay organized with collections Save and categorize content based on your preferences. This content was last updated in May 2024, and represents the status quo as of the time it was written. Google's security policies and systems may change going forward, as we continually improve protection for our customers. This document describes how Google implements security in our i
「シェンムー3」がEpic Gamesストア独占配信となったためSteamユーザーの不満が爆発、ついに出資金の返金に対応することに
セガのドリームキャスト向けに1999年にリリースされた「シェンムー 一章 横須賀」は、オープンワールドの元祖とも呼ばれるゲーム。多額の開発費を投入して製作されたものの、セガがゲームハード事業から撤退したこともあり、2001年に発売されたシェンムーII以降はシリーズ未完のままとなっていました。そんなシェンムーシリーズ待望の続編タイトルとなる「シェンムー 3」が発表されたのですが、そのPC版が当初はSteamからリリースされる予定であったものの、突如Epic Gamesストアでの独占配信となってしまったため、一部の出資者たちから批判の声が挙がっていました。そんな中、問題の渦中にあるEpic Gamesが、Steam版を欲していた出資者たちには出資金を返金すると発表しました。 Shenmue 3 backers won't get Steam keys at launch, but refund
An interface is not an interface - Recent thoughts about clean coding - spacelyのブログ
Introduction Recently I've had to work on code which seemed to be based on clean architecture, but after a while I concluded that it is probably not and it made me think about clean coding in general and the principles of clean architecture in particular. Is it about a set of rules, and we are guaranteed to achieve cleanness as long as we follow them? Or is it about abstract principles, which we c
Gamedev in Lisp. Part 1: ECS and Metalinguistic Abstraction - cl-fast-ecs by Andrew
Gamedev in Lisp. Part 1: ECS and Metalinguistic Abstraction In this series of tutorials, we will delve into creating simple 2D games in Common Lisp. The result of the first part will be a development environment setup and a basic simulation displaying a 2D scene with a large number of physical objects. It is assumed that the reader is familiar with some high-level programming language, has a gener
Storybook 7.0
Storybook is the gold standard UI workshop environment. It’s used across the industry by teams at Monday.com, The Guardian, Intuit, and many others due to its unparalleled framework compatibility and rich features for development, documentation, and testing. Today, I’m excited to announce Storybook 7 (SB7), our first major release in over two years and by far our largest ever. It includes: ⚡ First
というNBER論文が上がっている（ungated版へのリンクがある著者の一人のページ）。原題は「The Dollar in an Era of International Retrenchment」で、著者はRyan Chahrour（コーネル大）、Rosen Valchev（ボストン大）。 以下はその要旨。 Recent trends suggest the world economy may be tending towards an equilibrium with two distinct trading blocs, each internally integrated, but with significant isolation between the blocs. This paper uses a quantitative theory to explore how fa
SynapseML: A simple, multilingual, and massively parallel machine learning library - Microsoft Research
Simplifying distributed ML through a unified API Writing fault-tolerant distributed programs is complex and a process that’s prone to errors. For example, consider the distributed evaluation of a deep network. The first step is to send a multi-GB model to hundreds of worker machines without overwhelming the network. Then, data readers must coordinate to ensure that all data is queued for processin
Leonora Tindall 2023/02/23 The Fediverse is not dying, nor is it crumbling. As an ideoform in the collective consciousness of the ’net, the Fediverse is already dead. What was the Fediverse? Stripped of technical terminology, the Fediverse (“federated universe”) refers to a bunch of web services which let people share text, images, video and audio with each other without a centralized authority. I
While these fixes moved the needle, they had limitations. By analyzing our database traffic, we learned that writes— like gathering, updating, or deleting data—contributed to a significant portion of database utilization. Additionally, not all reads or data fetching could be moved to replicas due to application sensitivity to replication lag. So, from both a read and write perspective, we still ne
Announcing Coinbase’s successful transition to React Native | by Coinbase | The Coinbase Blog
As of January 2021, the Coinbase iOS and Android apps have transitioned away from native development to React Native, and all mobile engineers are now collaborating in a single codebase. The transition from native to React Native did not happen overnight, and in the interest of helping those contemplating such a decision, we want to tell the story of how we got here. Specifically, we want to share
We've added JavaScript-native RPC to Cloudflare Workers
We've added JavaScript-native RPC to Cloudflare Workers04/05/2024 Cloudflare Workers now features a built-in RPC (Remote Procedure Call) system enabling seamless Worker-to-Worker and Worker-to-Durable Object communication, with almost no boilerplate. You just define a class: export class MyService extends WorkerEntrypoint { sum(a, b) { return a + b; } } And then you call it: let three = await env.
GameBoy CPU Manual
Sources by: Pan of Anthrox, GABY, Marat Fayzullin, Pascal Felber, Paul Robson, Martin Korth, kOOPa, Bowser Contents: Assembly Language Commands, Timings and Opcodes, and everything you always wanted to know about GB but were afraid to ask. THIS DOCUMENT IS PRINTED ON DIN A5 SIZE PAPER (148mm x 210mm)! Note: Game BoyTM , Game Boy PocketTM , Super Game BoyTM and Game Boy ColorTM are registered trade
LayoutShiftAttribution The LayoutShiftAttribution interface describes a single shift of a single DOM element. If multiple elements shift during a layout shift, the sources property contains multiple entries. For example, the JSON below corresponds to a layout shift with one source: the downward shift of the <div id='banner'> DOM element from y: 76 to y:246. // ... "sources": [ { "node": "div#banne
James Stanley - Nightdrive
I've made a JavaScript simulation of driving at night time on the motorway. It's hard to classify what it is. It's not a video, because it's generated dynamically. It's not a game, because you just watch. It's not a screensaver, because it's not the 90s. Maybe it's a "demo"? This is something I've been planning to make for years, but kept forgetting about. I would only remember it when in the pass
Internet Engineering Task Force (IETF) K. Davis Request for Comments: 9562 Cisco Systems Obsoletes: 4122 B. Peabody Category: Standards Track Uncloud ISSN: 2070-1721 P. Leach University of Washington May 2024 Universally Unique IDentifiers (UUIDs) Abstract This specification defines UUIDs (Universally Unique IDentifiers) -- also known as GUIDs (Globally Unique IDentifiers) -- and a Uniform Resou
What is CockroachDB Serverless? If you’ve created a database before, you probably had to estimate the size and number of servers to use based on the expected traffic. If you guessed too low, your database would fall over under load and cause an outage. If you guessed too high or if your traffic came in bursts, you’d waste money on servers that are just sitting idle. Could there be a better way? Se
Thoughts on software, hardware, performance, math, and similar topics A lot of ink is spent on the “monoliths vs. microservices” debate, but the real issue behind this debate is about whether distributed system architecture is worth the developer time and cost overheads. By thinking about the real operational considerations of our systems, we can get some insight into whether we actually need dist
セキュリティ英単語帳
2022年6⽉ 独⽴⾏政法⼈ 情報処理推進機構 産業サイバーセキュリティセンター 第5期中核⼈材育成プログラム 「セキュリティエンジニアのための English Reading」プロジェクト 動詞 単語 意味 関連語 使用例 include ～を含む 【名】inclusion: 包含、含まれるもの 【形】inclusive: すべてを含んだ the email including a malicious macro 悪意のあるマクロを含むメール steal ～を盗む steal sensitive information 機微な情報を盗む exploit (脆弱性) を突いて攻撃する 【名】エクスプロイト (コード) 【名】exploitation: (脆弱性を突く) 攻撃 【形】exploitable: 悪用可能な actively exploited vulnerability よく攻
Making the Tokio scheduler 10x fasterOctober 13, 2019 We've been hard at work on the next major revision of Tokio, Rust's asynchronous runtime. Today, a complete rewrite of the scheduler has been submitted as a pull request. The result is huge performance and latency improvements. Some benchmarks saw a 10x speed up! It is always unclear how much these kinds of improvements impact "full stack" use
Node.js compatibility for Cloudflare Workers – starting with Async Context Tracking, EventEmitter, Buffer, assert, and util
Node.js compatibility for Cloudflare Workers – starting with Async Context Tracking, EventEmitter, Buffer, assert, and util03/23/2023 Over the coming months, Cloudflare Workers will start to roll out built-in compatibility with Node.js core APIs as part of an effort to support increased compatibility across JavaScript runtimes. We are happy to announce today that the first of these Node.js APIs –
Golang Mini Reference 2022: A Quick Guide to the Modern Go Programming Language (REVIEW COPY)
Golang Mini Reference 2022 A Quick Guide to the Modern Go Programming Language (REVIEW COPY) Harry Yoon Version 0.9.0, 2022-08-24 REVIEW COPY This is review copy, not to be shared or distributed to others. Please forward any feedback or comments to the author. • feedback@codingbookspress.com The book is tentatively scheduled to be published on September 14th, 2022. We hope that when the release da
On July 5, 2023, Meta launched Threads, the newest product in our family of apps, to an unprecedented success that saw it garner over 100 million sign ups in its first five days. A small, nimble team of engineers built Threads over the course of only five months of technical work. While the app’s production launch had been under consideration for some time, the business finally made the decision a
登記所備付地図データコンバータをGitHubで公開します(We launched the data converter for the National Land Register data on th｜デジタル庁Data strategy team: Digital Agency, Gov of JP
そのソースコードをデジタル庁が譲り受け、アドレスベースレジストリの整備に必要な機能を追加してデジタル庁の職員（民間専門人材）がPythonで書き直したものです。 登記所備付地図データとアドレスベースレジストリ整備コンバータはアドレスベースレジストリの整備のために作成したものです。 アドレスベースレジストリは、住所・所在地のマスターデータです。主に行政機関で使用される住所・所在地の情報をIDで連携できることを目指して整備を推進しており、オープンデータとして無償で一般公開をしていきます。2022年4月に試験公開版として、住所・所在地の階層における「町字レベル」「住居表示の街区レベル」「住居表示の住居レベル」のデータを公開しました。 国土地理院の電子国土基本図（地名情報）、国土交通省の位置参照情報、法務省の地番区域情報（不動産登記の所在を示すデータ）の各データをいわばマッシュアップして初期整備し
React 18 was years in the making, and with it brought valuable lessons for the React team. Its release was the result of many years of research and exploring many paths. Some of those paths were successful; many more were dead-ends that led to new insights. One lesson we’ve learned is that it’s frustrating for the community to wait for new features without having insight into these paths that we’r
New – Savings Plans for AWS Compute Services | Amazon Web Services
AWS News Blog New – Savings Plans for AWS Compute Services I first wrote about EC2 Reserved Instances a decade ago! Since I wrote that post, our customers have saved billions of dollars by using Reserved Instances to commit to usage of a specific instance type and operating system within an AWS region. Over the years we have enhanced the Reserved Instance model to make it easier for you to take ad
The current state of web application development User expectations of the web are now that you have this super-smooth no-reload experience. Unfortunately, it's an expectation that is usually delivered with single-page applications (SPAs) that rely on libraries and frameworks like React and Angular, which are very specialised tools that can be complicated to work with. A new approach is to put the
巨大地震のきっかけは月なのか？ | ITに頼って生きていく
Advertisements 0. Abstract It’s a very interesting phenomenon that global transformation by a the Moon’s tide stress seems to be a trigger of occurrence for a disastrous earthquake (M>=5.5). It is found out that some statistically considered research papers geared to past earthquakes, there is no one which show about Lunar Age or Lunar Phase Angle clearly.The one of possibility reason is tidal pha
2010年代ベストアルバム50選 PART1：TOP 50 ALBUMS OF 2010s [50-41] - ゆーすPのインディーロック探訪
どうもゆーすPです。今回は2010年代のベストアルバム50選です。 2010年から2019年の10年間は、まさに私が音楽、特に洋楽を聴くようになってからの10年間と丸々一致しています。最初に夏フェスに行ったのは2010年のことでしたし、MTVを見るようになってCDを買うようになったのも2010年のことでした。その意味で、2010年代の音楽とは私がリアルタイムで追ってきた音楽のすべてです。 そのため、個人的に思い入れのある音楽が多く50枚に絞るのは至難の業でした。断腸の思いでランキングから外した作品がたくさんあります。したがって、ここにある50枚は私の10年間のほんの一部分でしかありません。時間があったら50位-100位等の形でそれらの作品を取り上げたいと思っていますが。 そして、ランキングを作る際に心掛けたことが一つあります。それは、当時の自分の評価を重視することです。2011年以降毎年個
![2010年代ベストアルバム50選 PART1：TOP 50 ALBUMS OF 2010s [50-41] - ゆーすPのインディーロック探訪](https://cdn-ak-scissors.b.st-hatena.com/image/square/281d153cdb0ed61d6f1b7fa93555fa8e25f4debf/height=288;version=1;width=512/https%3A%2F%2Fcdn-ak.f.st-hatena.com%2Fimages%2Ffotolife%2Fv%2Fvordhosbn%2F20200211%2F20200211093859.jpg)
Step Functions Distributed Map – A Serverless Solution for Large-Scale Parallel Data Processing | Amazon Web Services
AWS News Blog Step Functions Distributed Map – A Serverless Solution for Large-Scale Parallel Data Processing I am excited to announce the availability of a distributed map for AWS Step Functions. This flow extends support for orchestrating large-scale parallel workloads such as the on-demand processing of semi-structured data. Step Function’s map state executes the same processing steps for multi
GitHub - wwwtyro/candygraph: Fast by default, flexible 2D plotting library.
Adopts D3's elegant concept of scales, but implements them on the GPU to maximize data throughput and handle scale changes with no additional cost. Performs all rendering on the GPU, even axes and text. This keeps rendering and compositing fast and simple - no need to overlay a canvas or svg over your plot. Provides a small but growing set of highly optimized primitives that are tuned for handling
Programming interviews can be a great learning experience for interviewers as well as interviewees. In fact, I recently had the opportunity to learn something new about Rust while interviewing an engineering candidate. Background About our Interview ProcessAt OneSignal, we don't believe in handing someone a problem and watching them flounder with zero autocomplete and zero docs. Engineers who appl
Injury Management | Corporate Health | My Family Health Medical Centre
In case of any injury, your worker will have quick access to a doctor to receive appropriate medical treatment. If there is a need for further treatment, our staff will coordinate with hospital or relevant specialist to organise referral / appointment. Our doctors will help for continued management for injured worker and set an appropriate return to work plan. Such approach facilitates and help
Hello! They kept us in Suspense long enough, but HECK React developers have some new features to play with!! The best part: Almost all of the benefits of the upgrade don't require major code changes. The New Root API React has always had to have some kind of root. You're probably used to seeing something like this at the top level of your applications: import ReactDOM from 'react-dom'; import App
What happened to Vivaldi Social? | Thomas Pike’s other blog
On Saturday 8 July 2023, user accounts started disappearing from the Vivaldi Social Mastodon instance. What was going on, how did this happen, and what were the consequences? This is a very long blog post, but to be fair, this was also to be a very long weekend. If you want to skip to the conclusion, there’s a TL;DR (too long; didn’t read) section at the end. Something’s not right It was around 17
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pzuraq | Four Eras of JavaScript Frameworks
Architecture of an early stage SAAS | Feelback Blog
BeyondProd | Documentation | Google Cloud
国際的な縮小の時代におけるドル - himaginary’s diary
The Fediverse is Already Dead | Nora Codes
The growing pains of database architecture | Figma Blog
Debug layout shifts | Articles | web.dev
RFC 9562: Universally Unique IDentifiers (UUIDs)
How we built a serverless SQL database
Use One Big Server - Speculative Branches
Making the Tokio scheduler 10x faster | Tokio - An asynchronous Rust runtime
How Meta built the infrastructure for Threads
React Labs: What We've Been Working On – June 2022 – React
Chris James - HTMX is the Future
Understanding Rust Thread Safety
React 18 Alpha is out! Now what?