Rearchitecting: Redis to SQLite | Wafris
Pssst - want to skip right to the chart? click here Background We're Wafris, an open-source web application firewall company that, among other frameworks, ships a Rails middleware client. At launch, the v1 client required a local Redis datastore to be deployed with your app. We're now releasing v2 of our Rails client which uses SQLite as the backing datastore. This article covers the decision-maki
Building a highly-available web service without a database
If you’ve ever built a web service or a web app, you know the drill: pick a database, pick a web service framework (and in today’s day and age, pick a front-end framework, but let’s not get into that). This has been the case for several decades now, and people don’t stop to question if this is still the best way to build a web app. Many things have changed in the last decade: Disk is a lot faster
How Python Asyncio Works: Recreating it from Scratch
How Python Asyncio Works: Recreating it from Scratch Posted on May 6, 2024 Right now, asyncio is one of the trendier topics in Python, and rightfully so – It’s a great way to handle I/O-bound programs! When I was learning about asyncio, It took me a while to understand how it actually worked. But later, I came to find out that it’s basically just a really nice layer on top of Python Generators. In
Welcome - 100 Exercises To Learn Rust
Welcome Welcome to "100 Exercises To Learn Rust"! This course will teach you Rust's core concepts, one exercise at a time. You'll learn about Rust's syntax, its type system, its standard library, and its ecosystem. We don't assume any prior knowledge of Rust, but we assume you know at least another programming language. We also don't assume any prior knowledge of systems programming or memory mana
Nick Craver - Stack Overflow: A Technical Deconstruction
As new posts in the series appear, I’ll add them here to serve as a master list: #1: Stack Overflow: The Architecture - 2016 Edition #2: Stack Overflow: The Hardware - 2016 Edition #3: Stack Overflow: How We Do Deployment - 2016 Edition #4: Stack Overflow: How We Do Monitoring - 2018 Edition #5: Stack Overflow: How We Do App Caching - 2019 Edition One of the reasons I love working at Stack Overflo
10 hard-to-swallow truths they won't tell you about software engineer job
Last weekend I had a chance to talk with some students who just got their degree. They are pursuing their first software engineer job. In conversation with them, I learned that they have a pretty wrong perception of this job. This is because the reality for these new kids is so skewed. They only see good pay, remote work, team building, and pizza parties. These are all good perks, but no one is ta
Computer Architecture Education Kit
様々なライセンスモデルについて学んだ上で、どれがお客様に最適かを判断して頂き、Arm担当者までお問い合わせください。
Hello! Statisticians!: - あつまれ統計の森
「統計の森」でははあらゆる概念について「完全に理解する」ことを目標にコンテンツ制作を行っています。特に昨今必須スキルともされることの多い「統計学」・「機械学習」・「DeepLearning」に関して様々な観点から取り扱います。統計学に関する数学的な議論は難しいとされがちですが、なるべく「本質的な理解」ができるようにそれぞれのトピックの作成を行います。 ・学習ロードマップ https://www.hello-statisticians.com/loadmap1 ・統計学 重要演習$100$選 https://www.hello-statisticians.com/practice_100 ・『直感的に理解するTransformer』サポートページ https://www.hello-statisticians.com/ml/deeplearning/support_transformer.h
CSS Triggers List - What Kind of Changes You Can Make
• Layout • Paint • Composite align-content Changing align-content alters the geometry of the element. That means that it may affect the position or size of other elements on the page, both of which require the browser to perform layout operations. Once those layout operations have completed any damaged pixels will need to be painted and the page must then be composited together. align-items Changi
Python logging - under the hood
Agenda This post aims at making you aware about the internals of the Python logging module. I often find myself struggling to use the logging module and have to refer the documentation. It's either my ignorance towards logging or probably logging isn't documented as well and crisply as it should be. So this is my take to unravel what goes on in the logging module. If you have a solid grasp of diff
Introduction - OWASP Cheat Sheet Series
¶ The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics. These cheat sheets were created by various application security professionals who have expertise in specific topics. We hope that this project provides you with excellent security guidance in an easy to read format. You can download this site here. An ATOM f
Google Chrome EV表示の終焉 - ぼちぼち日記
1. Chrome でEV証明書の組織名表示がなくなる ついにGoogleからChromeのURLバーからEV表示を削除する正式なアナウンスが出ました。 Upcoming Change to Chrome's Identity Indicators EV UI Moving to Page Info 現在(2019年8月) StableのChrome76では、以下の様にURLバー左側にEV証明書を利用していることを示す「組織名+国名」表示が付いています。 Chrome76のEV表示 2019年9月10日Stableリリース予定のChrome77からはEV表示がURLバーから削除され、鍵アイコンをクリックして表示されるPage Infoに「組織名＋国名」が表示されるようになります。 Googleのアナウンスでは、 "on certain websites" と書いてあることから一気にではなく
The Elements of Style Archives - Collection at Bartleby.com
Make definite assertions. Avoid tame, colorless, hesitating, non-committal language.—Rule 12 Asserting that one must first know the rules to break them, this classic reference book is a must-have for any student and conscientious writer. Intended for use in which the practice of composition is combined with the study of literature, it gives in brief space the principal requirements of plain Englis
思考停止しないアーキテクチャ設計 ➖ JJUG CCC 2018 Fall
2. What is Software Architecture ● IEEE1471「コンポーネント、それらの関係や環境、設計やそのコンポーネント、それらの関係や環境、設計やそのそれらの関係や環境、設計やその関係や環境、設計やそのや環境、設計やその環境、それらの関係や環境、設計やその設計やそのや環境、設計やそのその関係や環境、設計やその 進化を左右する原則に具現化されたシステムの基本的な構成」を左右する原則に具現化されたシステムの基本的な構成」左右する原則に具現化されたシステムの基本的な構成」する原則に具現化されたシステムの基本的な構成」原則に具現化されたシステムの基本的な構成」に具現化されたシステムの基本的な構成」具現化を左右する原則に具現化されたシステムの基本的な構成」されたシステムの基本的な構成」システムの基本的な構成」の関係や環境、設計やその基本的な構成」な構成」構成」」 ● M
Liftoff: a new baseline compiler for WebAssembly in V8
Show navigation V8 v6.9 includes Liftoff, a new baseline compiler for WebAssembly. Liftoff is now enabled by default on desktop systems. This article details the motivation to add another compilation tier and describes the implementation and performance of Liftoff. Logo for Liftoff, V8’s WebAssembly baseline compilerSince WebAssembly launched more than a year ago, adoption on the web has been stea
SQL Grammar
Details Click on the header of the grammar element to switch between railroad diagram and BNF. Non-standard syntax is marked in green. Compatibility-only non-standard syntax is marked in red, don't use it unless you need it for compatibility with other databases or old versions of H2. Literals Value
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Software Engineering at Google
Message Passing - はなしをふったりふられたり
Recovering passwords from pixelized screenshots
つらくないマルチテナンシーを求めて: 全て見せます！ SmartHR データベース移行プロジェクトの裏側 / builderscon 2018
