https://rubiin.is-a.dev Experienced full-stack developer proficient in JavaScript and Golang, specializing in crafting robust web applications and API systems for seamless user interactions. en https://rubiin.is-a.dev/blog/my-dev-setup https://rubiin.is-a.dev/blog/my-dev-setup Sun, 23 Aug 2026 00:00:00 GMT The full rundown of my Arch Linux setup: Hyprland, WezTerm, Neovim, and every CLI tool I daily drive. What works, what doesn't, and why I chose it. linux https://rubiin.is-a.dev/blog/javascript-event-loop-coffee-shop https://rubiin.is-a.dev/blog/javascript-event-loop-coffee-shop Tue, 11 Aug 2026 00:00:00 GMT One barista, two queues, and a rule about regulars. A mental model for how JavaScript handles one thing at a time without feeling slow. javascript https://rubiin.is-a.dev/blog/idempotency-keys-api-retries https://rubiin.is-a.dev/blog/idempotency-keys-api-retries Sat, 08 Aug 2026 00:00:00 GMT The network will drop your request, the client will retry, and POST /payments will run twice. Idempotency keys are how you make 'try again' harmless. architecture https://rubiin.is-a.dev/blog/graceful-shutdowns https://rubiin.is-a.dev/blog/graceful-shutdowns Wed, 05 Aug 2026 00:00:00 GMT SIGTERM arrives, the process dies mid-request, and users see 502s during every deploy. Graceful shutdown is the fix. Here's how to do it right. devops https://rubiin.is-a.dev/blog/jwt-vs-sessions-auth https://rubiin.is-a.dev/blog/jwt-vs-sessions-auth Sun, 02 Aug 2026 00:00:00 GMT Stateless tokens or server-side sessions? The answer depends on who's using your API. Here's how to pick without cargo-culting either side. auth https://rubiin.is-a.dev/blog/typescript-satisfies-operator https://rubiin.is-a.dev/blog/typescript-satisfies-operator Sat, 01 Aug 2026 00:00:00 GMT You know that awkward dance between 'as' assertions and letting TypeScript infer everything? satisfies is the middle ground you've been missing. typescript https://rubiin.is-a.dev/blog/database-connection-pooling https://rubiin.is-a.dev/blog/database-connection-pooling Wed, 29 Jul 2026 00:00:00 GMT Opening a database connection is expensive. Connection pooling reuses them. Getting it wrong is how you end up with 'timeout waiting for connection' at 3pm. database https://rubiin.is-a.dev/blog/sql-indexes-explained https://rubiin.is-a.dev/blog/sql-indexes-explained Sat, 25 Jul 2026 00:00:00 GMT Your query was fast, then the table grew, and now it's slow. Indexes are the fix. Here's how they work, when to add them, and when they make things worse. sql https://rubiin.is-a.dev/blog/fzf-fuzzy-finder https://rubiin.is-a.dev/blog/fzf-fuzzy-finder Mon, 20 Jul 2026 00:00:00 GMT Fuzzy-find anything: files, command history, git branches, docker containers. A tour of fzf and the aliases I can't live without anymore. linux https://rubiin.is-a.dev/blog/debugging-nodejs-memory-leaks https://rubiin.is-a.dev/blog/debugging-nodejs-memory-leaks Mon, 06 Jul 2026 00:00:00 GMT Heap snapshots, listener leaks, and the 'compare two snapshots' trick. A practical, step-by-step approach to finding memory leaks in long-running Node.js processes. nodejs https://rubiin.is-a.dev/blog/modern-css-features-i-use-every-day https://rubiin.is-a.dev/blog/modern-css-features-i-use-every-day Mon, 22 Jun 2026 00:00:00 GMT From :has() to container queries to color-mix(). The CSS features that quietly replaced a pile of JavaScript and hacky workarounds in my projects. css https://rubiin.is-a.dev/blog/git-reflog-recover-lost-commits https://rubiin.is-a.dev/blog/git-reflog-recover-lost-commits Mon, 08 Jun 2026 00:00:00 GMT git reset --hard gone wrong? Branch deleted? The reflog is your safety net. Here's how to fish commits back out of thin air. git https://rubiin.is-a.dev/blog/goroutines-for-beginners https://rubiin.is-a.dev/blog/goroutines-for-beginners Mon, 25 May 2026 00:00:00 GMT Concurrency sounds scary until you see go, channels, and WaitGroup in action. A friendly, practical first look at Go's goroutines. golang https://rubiin.is-a.dev/blog/designing-rest-apis-people-like https://rubiin.is-a.dev/blog/designing-rest-apis-people-like Mon, 11 May 2026 00:00:00 GMT Nouns, not verbs. Consistent errors. Honest status codes. The design decisions that separate APIs devs love from APIs devs complain about. api https://rubiin.is-a.dev/blog/shell-scripting-for-developers https://rubiin.is-a.dev/blog/shell-scripting-for-developers Mon, 27 Apr 2026 00:00:00 GMT set -euo pipefail, quoting rules, and why your script works on your machine. A pragmatic starter kit for writing scripts that survive contact with reality. shell https://rubiin.is-a.dev/blog/usecallback-and-usememo-when-they-help https://rubiin.is-a.dev/blog/usecallback-and-usememo-when-they-help Mon, 13 Apr 2026 00:00:00 GMT Memoization is not a free win. A plain-English look at when useCallback and useMemo earn their keep, and the cases where they're just busywork. react https://rubiin.is-a.dev/blog/repl-in-nestjs https://rubiin.is-a.dev/blog/repl-in-nestjs Sun, 14 Jul 2024 00:00:00 GMT The NestJS REPL gives you a live interactive shell into a running application. Inspect providers, query the DI container, and debug without restarting. nestjs https://rubiin.is-a.dev/blog/linux-commands-you-should-master https://rubiin.is-a.dev/blog/linux-commands-you-should-master Sat, 13 Jul 2024 00:00:00 GMT A practical tour of the Linux commands that form the backbone of navigating and managing a system from the terminal, for beginners and veterans alike. linux https://rubiin.is-a.dev/blog/top-obsidian-plugins-to-supercharge-your-note-taking-experience https://rubiin.is-a.dev/blog/top-obsidian-plugins-to-supercharge-your-note-taking-experience Fri, 05 Jul 2024 00:00:00 GMT Obsidian is a Markdown-based note-taking app with a strong plugin ecosystem. These are the plugins I actually use daily. obsidian https://rubiin.is-a.dev/blog/useful-aliases-for-docker https://rubiin.is-a.dev/blog/useful-aliases-for-docker Sun, 30 Jun 2024 00:00:00 GMT Short, battle-tested aliases that save a few keystrokes on the Docker commands you run every day. docker https://rubiin.is-a.dev/blog/terminal-101---xargs https://rubiin.is-a.dev/blog/terminal-101---xargs Wed, 15 May 2024 00:00:00 GMT xargs builds and executes commands from standard input. Here is how to use it safely and well. linux https://rubiin.is-a.dev/blog/python-for-nodejs-developers https://rubiin.is-a.dev/blog/python-for-nodejs-developers Tue, 22 Aug 2023 00:00:00 GMT A side-by-side cheatsheet of Python and Node.js syntax, data types, control flow, and functions. nodejs https://rubiin.is-a.dev/blog/sass-mixins-that-are-way-too-good https://rubiin.is-a.dev/blog/sass-mixins-that-are-way-too-good Mon, 05 Jun 2023 00:00:00 GMT A collection of Sass mixins that are way too good to skip. Font-weight utilities, common patterns, and time-saving snippets you can drop straight into your stylesheets. css https://rubiin.is-a.dev/blog/docker-pipeline-with-typescript-express-for-production https://rubiin.is-a.dev/blog/docker-pipeline-with-typescript-express-for-production Wed, 08 Jun 2022 00:00:00 GMT This post will guide you through how to setup docker for a express app on typescript. This also works for other frameworks besides express. This post assumes… docker https://rubiin.is-a.dev/blog/typescript-notes https://rubiin.is-a.dev/blog/typescript-notes Sat, 07 May 2022 00:00:00 GMT Practical TypeScript notes. The unknown type, null and undefined checks, and everyday gotchas, each with before-and-after code examples. typescript https://rubiin.is-a.dev/blog/typeof-and-lookup-type-in-typescript https://rubiin.is-a.dev/blog/typeof-and-lookup-type-in-typescript Mon, 02 May 2022 00:00:00 GMT How typeof and lookup (indexed access) types work in TypeScript. Create type aliases from existing values and extract property types, with real examples. typescript https://rubiin.is-a.dev/blog/unknown-type-in-typescript https://rubiin.is-a.dev/blog/unknown-type-in-typescript Mon, 25 Apr 2022 00:00:00 GMT The unknown type in TypeScript is a strict version of any. It accepts any value, but forces you to narrow the type before using it. typescript https://rubiin.is-a.dev/blog/why-commit-signing-is-necessary https://rubiin.is-a.dev/blog/why-commit-signing-is-necessary Mon, 21 Mar 2022 00:00:00 GMT In git , when you are pushing code to origin a.k.a the remote server, out of the box, it uses email address and name to distinguish between commits made by i… git https://rubiin.is-a.dev/blog/ubuntu-increase-inotify-watcher-file-watch-limit https://rubiin.is-a.dev/blog/ubuntu-increase-inotify-watcher-file-watch-limit Sun, 01 Nov 2020 00:00:00 GMT Listen uses inotify by default on Linux to monitor directories for changes. It's not uncommon to encounter a system limit on the number of files you can moni… linux https://rubiin.is-a.dev/blog/measure-function-execution-time-in-golang https://rubiin.is-a.dev/blog/measure-function-execution-time-in-golang Sun, 12 Jul 2020 00:00:00 GMT For some reason you may want to keep a track of how much long a function takes to do a certain task in golang, maybe for performance evaluation.Here is a fun… golang https://rubiin.is-a.dev/blog/vim-quickies-cheatsheet https://rubiin.is-a.dev/blog/vim-quickies-cheatsheet Sun, 24 Nov 2019 00:00:00 GMT A quick Vim cheatsheet. File editing, navigation, modes, and everyday commands at a glance. vim https://rubiin.is-a.dev/blog/custom-jenkins-images-with-plugins-pre-installed https://rubiin.is-a.dev/blog/custom-jenkins-images-with-plugins-pre-installed Sat, 12 Oct 2019 00:00:00 GMT If you are doing continuous delivery or continuous integration, you may frequently run into jenkins. Jenkins is a core part of our Continuous Integration and… devops https://rubiin.is-a.dev/blog/docker-cheatsheet https://rubiin.is-a.dev/blog/docker-cheatsheet Tue, 01 Oct 2019 00:00:00 GMT Docker basics/ cheatsheet docker https://rubiin.is-a.dev/blog/getting-started-with-api-development-on-nodejs https://rubiin.is-a.dev/blog/getting-started-with-api-development-on-nodejs Thu, 19 Sep 2019 00:00:00 GMT Scaffold a Node.js project and build your first Express API with a few routes. Assumes basic JavaScript knowledge. nodejs https://rubiin.is-a.dev/blog/caching-your-express-app https://rubiin.is-a.dev/blog/caching-your-express-app Thu, 19 Sep 2019 00:00:00 GMT What is caching? Fetching something over the network is both slow and expensive. Large responses require many roundtrips between the client and server, which… nodejs https://rubiin.is-a.dev/blog/managing-environment-variables-on-nestjs https://rubiin.is-a.dev/blog/managing-environment-variables-on-nestjs Wed, 18 Sep 2019 00:00:00 GMT Environment variables let you keep config out of your code. Here's how to manage them in a NestJS project. nestjs https://rubiin.is-a.dev/blog/journey-to-linux https://rubiin.is-a.dev/blog/journey-to-linux Sun, 15 Sep 2019 00:00:00 GMT A developer's journey to Linux. Distro hunting, the terminal, package managers, and why making the switch is worth the learning curve. linux https://rubiin.is-a.dev/blog/managing-multiple-nodejs-versions-with-nvm https://rubiin.is-a.dev/blog/managing-multiple-nodejs-versions-with-nvm Sat, 14 Sep 2019 00:00:00 GMT Ever got in a situation where you have to use different nodejs versions for different projects. or you want to have the stable and the latest release side by… nodejs https://rubiin.is-a.dev/blog/nodejs-api-development-part-2-middlewares https://rubiin.is-a.dev/blog/nodejs-api-development-part-2-middlewares Fri, 13 Sep 2019 00:00:00 GMT Last time we learnt the basics of express web framework like how to setup routes,get and post request and soon. In this part we will be talking about middlew… nodejs https://rubiin.is-a.dev/blog/dynamically-requiring-all-routes-in-express-app https://rubiin.is-a.dev/blog/dynamically-requiring-all-routes-in-express-app Wed, 04 Sep 2019 00:00:00 GMT As your Express app grows, registering routes one-by-one gets tedious. A few lines of dynamic route loading fix that. nodejs https://rubiin.is-a.dev/blog/resolving-path-alias-in-nestjs-projects https://rubiin.is-a.dev/blog/resolving-path-alias-in-nestjs-projects Mon, 02 Sep 2019 00:00:00 GMT Building a nestjs project in typescript is really awesome but as the project starts to grow , your directories will grow too thus making your imports lengthy… nestjs https://rubiin.is-a.dev/blog/add-custom-operators-to-typeorm https://rubiin.is-a.dev/blog/add-custom-operators-to-typeorm Tue, 12 Feb 2019 00:00:00 GMT TypeORM is an ORM that can run in NodeJS, Browser, Cordova, PhoneGap, Ionic, React Native, NativeScript, Expo, and Electron platforms and can be used with Ty… nestjs