"壊れにくい"データ基盤を構築するためにMackerelチームで実践していること - Hatena Developer Blog
こんにちは。MackerelチームにおいてCRE（Customer Reliability Engineer）をしているid:syou6162です。主にカスタマーサクセスを支えるデータ基盤の構築や、データ分析を担当しています。 今回は、壊れにくいデータ基盤を構築するため、Mackerelチームで実践していることを紹介します。 なぜ壊れにくいデータ基盤を構築するのか データ基盤が“壊れている”とはどういうことか 壊れてないだけでなく、壊れたら気付ける 前提とするシステム構成 壊れたことに気付けるよう監視する 1. バッチジョブが失敗したことに気付く 2. 投入されたデータの性質を監視する 3. ビューが壊れてないかを監視する 4. 利用状況を監視する そもそも壊れてない状態を保つ 1. データリネージを元に修正できるようにする 2. 使われていないテーブルやビューは定期的に掃除 おわりに 参
Beirut blast 3 years on: Footage shows moment of deadly explosion in slow motion
August 4, 2023, marks three years on from a deadly explosion that rocked the port of Beirut. Footage captured in 2020 by resident Agoston Nemeth on his iPhone SE shows the moment the huge explosion went off, sending a visible blast wave hurtling towards the camera. The blast killed over 200 and injured more than 6,000 people. The HD 4K video recorded Nemeth, a 42-year-old therapist from Budapest,
スノーフレイク (SNOW) の技術的な企業分析
Snowflake（SNOW）は、2012年に設立されたクラウドベースのデータウェアハウス企業である。カリフォルニア州サンマテオに拠点を置く、同社は9月下旬にニューヨーク証券取引所に上場し、米国での株式公開で過去最大のソフトウェア企業となった。 当初、株式の価格は75ドルから85ドルの間と予想されていたが、同社は120ドルで上場し、取引初日には300ドルにまで急上昇した。これは別の記録を更新した。スノーフレークは、上場初日に株式価値が2倍になった史上最大の企業となり、時価総額は750億ドル近くに達した。 これまで多くの企業データはオンプレミスで保存されてきた。つまり、データは企業が管理する物理サーバーに保存されていた。OracleやIBMなどの現存企業が伝統的にこの領域を支配してきた。 しかし、Snowflakeは根本的に違う。Snowflakeは、データをオンプレミスに保存するのではなく
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
MDPIはハゲタカジャーナルか？MDPIのインパクトファクター（JCR2018)（2019年6月発表） ＭDPI社の学術誌に自分の論文を投稿しても良いものかどうか、で悩んでいる人がかなり多いみたいなので、MDPIに関する評判を纏めておきます。 オープンアクセスジャーナルの発行元の一つに、MDPI (Multidisciplinary Digital Publishing Institute)という会社があります。以前はBeall氏にハゲタカジャーナルという認定を受けていたのですが、強行な抗議行動を行ったため、結局Beall’s Listからは外されました。Beall氏の最近の論文を読む限り、彼はBeall’s ListからMDPIを外しはしましたが、MDPIに対する考え方は全く変えていないようです。MDPIがいかに執拗な嫌がらせ行動を仕掛けてきたかを報告しています。 Still other
二極化の神話 またはおっさんずジョブの衰退とねえちゃんずジョブの興隆 - hamachanブログ(EU労働法政策雑記帳)
ソーシャル・ヨーロッパにゲルマン・ベンダー氏が「The myth of job polarisation may fuel populism」（二極化の神話がポピュリズムを掻き立てる）という短い文を寄稿しているんですが、これが大変面白い。 https://www.socialeurope.eu/the-myth-of-job-polarisation-may-fuel-populism 21世紀になってから流行し、ほとんど常識化している労働市場の二極化、ってのは実は現実の姿では無くて神話に過ぎないという話と、それがアカデミズムだけじゃなくて一般社会に大きな影響を及ぼしたために、ポピュリズムがはやってしまった、という批判なんですが、まずその二極化が神話だという話。 何が「神話」だと言っているかというと、低技能労働者と高技能労働者が増えて中間層が減っていくという認識が間違っていると言うんです。
Scaling Datastores at Slack with Vitess - Slack Engineering
Rafael Chacón Staff Software Engineer, Infrastructure From the very beginning of Slack, MySQL was used as the storage engine for all our data. Slack operated MySQL servers in an active-active configuration. This is the story of how we changed our data storage architecture from the active-active clusters over to Vitess — a horizontal scaling system for MySQL. Vitess is the present and future of Dat
Our latest perspectives on the coronavirus outbreak, the twin threats to lives and livelihoods, and how organizations can prepare for the next normal. COVID-19: Briefing note #100, April 13, 2022 As COVID-19 becomes endemic in much of the world, we turn our focus to sustainable and inclusive growth. On March 2, 2020, just over a week before a global pandemic was declared, we published COVID-19: Br
Uyghurs for sale | Australian Strategic Policy Institute | ASPI
‘Re-education’, forced labour and surveillance beyond Xinjiang. The Chinese government has facilitated the mass transfer of Uyghur and other ethnic minority1 citizens from the far west region of Xinjiang to factories across the country. Under conditions that strongly suggest forced labour, Uyghurs are working in factories that are in the supply chains of at least 82 well-known global brands in the
Amnesty International commissioned independent external experts to review the production and publication of this press release. Their findings and recommendations can be found in this legal review and in the Ukraine Organizational Report. Amnesty International welcomes the findings of these reviews and is committed to implementing their recommendations. Military bases set up in residential areas i
Introducing MNT Pocket Reform Pocket Reform is a 7 inch mini laptop from MNT Research. We condensed the best features of MNT Reform into a smaller, lighter, and more affordable device while adding some new exciting details. Compact yet Fully Featured Pleasant Typing Experience Modular and Upgradable Abundant Connectivity Recyclable Case, Reusable Parts Open Source Hardware and Software Mobile Writ
The Best GPUs for Deep Learning in 2023 — An In-depth Analysis
OverviewThis blog post is structured in the following way. First, I will explain what makes a GPU fast. I will discuss CPUs vs GPUs, Tensor Cores, memory bandwidth, and the memory hierarchy of GPUs and how these relate to deep learning performance. These explanations might help you get a more intuitive sense of what to look for in a GPU. I discuss the unique features of the new NVIDIA RTX 40 Amper
13 Best and Unique Theme Parks in Japan to Visit in 2023
Japan is home to dozens of theme parks and amusement parks. A visit to a theme or amusement park is a popular activity among both Japanese as well as international tourists. In the ’80s and ’90s, during the Economic Bubble, many parks were opened across Japan. However, many were forced to close down, when the bubble burst. A number of the more popular, bigger operations remained open and are now m
Richard Stallman's personal political notes from 2019: July - October These are my personal opinions and do not speak for the GNU Project, the FSF, or anyone else. [ 2023 July - October | 2023 March - June | 2022 November - February | 2022 July - October | 2022 March - June | 2021 November - February | 2021 July - October | 2021 March - June | 2020 November - February | 2020 July - October | 2020
All 84 startups from Y Combinator's S19 Demo Day 1 | TechCrunch
It’s that time of year, Silicon Valley’s investor technocrati and advice-giving Twitter celebrities descended upon Pier 48 in San Francisco to judge the latest summer batch of Y Combinator startups. TechCrunch was there, as well, and we were tapping away feverishly as co-founders pitched to woo investors. There are 197 companies in total in the summer YC batch, we heard from 84 of them today — in
週刊Railsウォッチ: Ruby 3.1のエラー表示改善、言語の「プリミティブ」を探る、Amazon Redshift Serverlessほか（20211215後編）｜TechRacho by BPS株式会社
こんにちは、hachi8833です。明日はRubyWorld Conference 2021ですね。 RubyWorld Conference 2021 いよいよ明日開催です！ https://t.co/sDklVFyV6h — 株式会社万葉 (@everyleaf) December 15, 2021 週刊Railsウォッチについて 各記事冒頭には🔗でパーマリンクを置いてあります: 社内やTwitterでの議論などにどうぞ 「つっつきボイス」はRailsウォッチ公開前ドラフトを（鍋のように）社内有志でつっついたときの会話の再構成です👄 お気づきの点がありましたら@hachi8833までメンションをいただければ確認・対応いたします🙏 TechRachoではRubyやRailsなどの最新情報記事を平日に公開しています。TechRacho記事をいち早くお読みになりたい方はTwitterに
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Visiteurs depuis le 30/01/2019 : 1386 Connectés : 1 Record de connectés : 89 Posiflex Cr-4000 Cash Drawer Drivers For Mac ProPosiflex Cr-4000 Cash Drawer Drivers For Mac FreeSummary of Contents for POSIFLEX CR-4000 Page 1: Cash Drawer CR-4000/6000 SERIES CASH DRAWER USER’S MANUAL Rev. A2 FCC Notes: This equipment generates, uses, and can radiate radio frequency energy and, if not installed and use
Nick Loman On Twitter: Thinking Of Switching To Airmail For Mac - gigacorporate
Visiteurs depuis le 26/01/2019 : 1665 Connectés : 1 Record de connectés : 21 Nick Loman On Twitter: Thinking Of Switching To Airmail For Mac ProNick Loman On Twitter: Thinking Of Switching To Airmail For Mac FreeI discovered it took a lot of discipline to stay on track but after making such an effort for the week I will find it difficult to go back to the way I was before. The sustainable living p
Visiteurs depuis le 26/01/2019 : 3618 Connectés : 1 Record de connectés : 27 Open-Source and Mac Alternatives to Windows 7. By Don Reisinger 2 of 9 Ubuntu. Ubuntu is one of the most recognizable versions of Linux. The open-source operating system is also one of the. Here's an open source alternative which is 64-bit out of the box - and FREE: Reply 0 replies. Version 6.5.2. Tjekov37 Member Icon. Ho
目次 要 約 1章 HPV感染とがん 1.1 HPV感染 1.2 HPV関連疾患 1.3 子宮頸がんの症状・診断・治療 1章 引用文献 2章 HPV関連がんの疫学 2.1 日本のHPV関連がんの罹患・死亡の動向：子宮頸がん 2.2 日本のHPV関連がんの罹患・死亡の動向：子宮頸がん以外のがん 2章 引用文献 3章 HPVワクチンによるHPV関連がんの１次予防 3.1 HPVワクチン 3.2 HPVワクチンによるHPV関連がん予防の有効性と安全性 3.2.1 HPVワクチンによる感染予防効果 3.2.2 HPVワクチンによるHPV関連がん予防効果 3.2.3 HPVワクチンの安全性 3.3 日本におけるHPVワクチン接種の経緯・現状 3.4 HPVワクチン接種後の症状とその対応 3.4.1 HPVワクチン接種後に生じた症状：日本の事例 3.4.2 HPVワクチン接種後に生じた症状に関する診療
Introducing the latest AWS Heroes – May, 2020 | Amazon Web Services
AWS News Blog Introducing the latest AWS Heroes – May, 2020 Communities are now more important than ever. Members of local communities look to their leaders to provide guidance and mentorship on how to build AWS skills, solve technical problems, and grow their careers. Traditionally this AWS knowledge and community support is shared in many ways including via social media, blogs, open source proje
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新型コロナウイルスことCOVID-19がエレクトロニックミュージックシーンに与えている影響をチェック。 新型コロナウイルスことCOVID-19が世界各地のフェスティバル、クラブ、プロモーター、その他のエレクトロニックミュージックシーンに与えている影響の概要をお伝えする。アーティストやプロモーターのためのコミュニティやリソースの支援方法はこちらからチェック。 各国のクラブや音楽フェスティバル、ヴェニュー、その他の経済活動の再開計画についてのまとめはこちらから。 最終更新日: 1月8日（金）午後3時50分 1月8日 • 1月8日から2月7日にかけて首都圏の1都3県を対象に発令された緊急事態宣言を受け、クラブやヴェニューが続々と休業や営業時間の変更を発表している。今回の緊急事態宣言では、昨年春の宣言時のような音楽イベントの中止や延期要請はされず、飲食店に焦点が当てられている。対象地域内の飲食店（
Paul Le Roux - Wikipedia
Early life[edit] Le Roux was born on 24 December 1972, at Lady Rodwell Maternity Home in Bulawayo, Zimbabwe and given up for adoption. His birth certificate gives his first name as "unknown" and makes no mention of his father.[4][6][7] His biological mother's identity has not been disclosed; one source claims she was a poor teenager, while another states that his maternal grandmother was married t
The Best GPUs for Deep Learning in 2023 — An In-depth Analysis
Deep learning is a field with intense computational requirements, and your choice of GPU will fundamentally determine your deep learning experience. But what features are important if you want to buy a new GPU? GPU RAM, cores, tensor cores, caches? How to make a cost-efficient choice? This blog post will delve into these questions, tackle common misconceptions, give you an intuitive understanding
Data visualizations easier with Grafana plugin for BigQuery | Google Cloud Blog
Editor’s note: We’re hearing today from DoiT International, a Google Cloud Premier and MSP partner, and two-time International Partner of the Year. They recently built a Grafana plugin for BigQuery, making it easier to visualize your data. Read on for details. At DoiT International, we see data problems of all shapes and sizes. From complexity analysis to large-scale system design, there are a var
BigQuery provides tighter controls over data access | Google Cloud Blog
BigQuery row-level security enables more granular access to data Data security is an ongoing concern for anyone managing a data warehouse. Organizations need to control access to data, down to the granular level, for secure access to data both internally and externally. With the complexity of data platforms increasing day by day, it's become even more critical to identify and monitor access to sen
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20,000 Startup Ideas (This data comes from the O*NET web site.) This gives a kind of map of the territory of current economically important human activities. Therefore it represents a good source of startup ideas. It maybe is even the listing of approximately all startup ideas. Visit individuals in homes or attend group meetings to provide information on agency services, requirements, or procedure
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The next evolution of Looker, your unified business intelligence platform | Google Cloud Blog
Introducing the next evolution of Looker, your unified business intelligence platform As consumers, we all benefit from unprecedented access to data in everything we do, from finding answers on the web to navigating a new city to picking the best place to eat dinner. But at work it’s not that easy. Instead of having answers to questions at our fingertips, getting those answers is a costly IT proje
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Foundations and Trends R � in Databases Vol. 1, No. 2 (2007) 141–259 c � 2007 J. M. Hellerstein, M. Stonebraker and J. Hamilton DOI: 10.1561/1900000002 Architecture of a Database System Joseph M. Hellerstein1 , Michael Stonebraker2 and James Hamilton3 1 University of California, Berkeley, USA, hellerstein@cs.berkeley.edu 2 Massachusetts Institute of Technology, USA 3 Microsoft Research, USA Abstra
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This investigation is part of a broader project examining the 4 August 2020 explosion in the port of Beirut, its causes and aftermath. See also: The Beirut Port Explosion: The Welders The Beirut Port Explosion: Destruction of Destruction Shortly after 6:00pm on 4 August 2020, an explosion ripped through the port of Beirut. It killed more than two hundred people, wounded over 6,500, and destroyed l
Star Ghost Agency from Another World Web Novel Chapter 1-0
Author Note: This is a new web novel series I'll be starting. Here's the introductory chapter. Since the Japan Self Defense Force is politically restricted on deploying their forces anywhere around the world, the government secretly created a special ghost force that is mainly tasked to indirectly protect Japan from any secret international threat. They are called the Star Ghost Agency. My name is
Many database systems provide sample databases with the product. A good intro to popular ones that includes discussion of samples available for other databases is Sample Databases for PostgreSQL and More (2006). One trivial sample that PostgreSQL ships with is the Pgbench. This has the advantage of being built-in and supporting a scalable data generator. MySQL has a popular sample database named S
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Lakehouse: A New Generation of Open Platforms that Unify Data Warehousing and Advanced Analytics
Lakehouse: A New Generation of Open Platforms that Unify Data Warehousing and Advanced Analytics Michael Armbrust1, Ali Ghodsi1,2, Reynold Xin1, Matei Zaharia1,3 1Databricks, 2UC Berkeley, 3Stanford University Abstract This paper argues that the data warehouse architecture as we know it today will wither in the coming years and be replaced by a new architectural pattern, the Lakehouse, which will
Author Mark Richards walks you through the 10 most common microservice anti-patterns and pitfalls, and provides solutions for avoiding them. Preface In late 2006 service-oriented architecture (SOA) was all the craze. Companies were jumping on the bandwagon and embracing SOA before fully understanding the advantages and disadvantages of this very complex architecture style. Those companies that emb
This page collects ISW and CTP's updates on the conflict in Ukraine. In late February 2022, ISW began publishing daily synthetic products covering key events related to renewed Russian aggression against Ukraine. These Ukraine Conflict Updates replaced ISW’s previous “Indicators and Thresholds for Russian Military Operations in Ukraine and/or Belarus,” which we maintained from November 12, 2021, t
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MDPIはハゲタカジャーナル？その評判 - 日本の科学と技術
COVID-19: Implications for business
Ukraine: Ukrainian fighting tactics endanger civilians
Introducing MNT Pocket Reform—MNT Research GmbH
2019: July - October Political Notes - Richard Stallman
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子宮頸がんとその他のヒトパピローマウイルス（HPV） 関連がんの予防 | 国立がん研究センター
新型コロナ最新情報: 緊急事態宣言を受け、首都圏のクラブやバーが休業や時短営業を発表 · News ⟋ RA
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