Hello world💻💡🥰
Jitu turns JavaScript lessons into a growing systems-thinking series, moving from npm fixes and API basics to load balancers, scaling, and production architecture.
Hey! I am Jitu Tesfaye / just jit. I enjoy coding and learning new stuffs.I start new journey to 'hello world' join me!
Jitu Tesfaye started Hello World during university to share coding lessons and internship experiences. The channel now mixes practical explainers on JavaScript, APIs, authentication, Redux, and React with a bite-sized HelloWorldSeries about how large-scale systems work.
Jitu teaches by breaking technical ideas into everyday analogies, numbered steps, and compact explainers. The channel began with JavaScript and internship notes, then expanded into APIs, frontend state, security, and system design; the latest series uses short, practical posts aimed at projects and interviews.
- The channel has 40 posts collected so far.
- Text makes up 90% of the channel’s language mix in English.
- The busiest posting hour is 11.
- The favorite word is “javascript.”
The journey.
- Jul – Dec 2024
The JavaScript Notebook
The channel began with lessons from Jitu’s software-engineering studies and internship, covering JavaScript classes, modules, npm peer dependencies, file paths, environment modes, cookies, and sessions. By December, the focus had narrowed into compact JavaScript explainers on the spread and modulo operators.
Sources#8#11#12#20 - Mar 2025 – Mar 2026
The Practical Web Shelf
The lessons broadened from language syntax to the moving parts behind web applications: APIs, authentication tokens, Redux slices, and real-time chat with React and Socket.IO. The channel also became a useful shelf of developer resources, including the GitHub Student Developer Pack, JavaScript interview questions, and React references.
Sources#42#43#45#46 - Apr – Sep 2026
HelloWorldSeries Goes Big
Jitu returned with a clearer format: short, practical posts on the invisible machinery behind large applications. The series follows a request through DNS, load balancers, gateways, and databases, then steps into enterprise patterns such as BFF, Keycloak, and Kong.
Sources#66#67#68#70
Building now.
Start here.
- 01
The relaunch post explains the channel’s new system-design direction and its short, practical format.
👋 Hello World! I’m Back. It’s been a while! I started this group in my Uni days to stay consistent while learning to code. Life got busy, but my curi...
Apr 1, 202681 views - 02
A clear walk through what happens between clicking Send and reaching a database.
🚀 Part 1: The Secret Life of a Click Ever wondered what happens in the split second between hitting Send and seeing that checkmark? It’s not a straight line, i...
Apr 1, 202687 views - 03
The restaurant-order analogy makes APIs, REST, GraphQL, and webhooks easy to enter.
🚀 APIs: The Secret Sauce Behind Apps! 🍔 Hey everyone! I know I’ve been away for a while—sorry for disappearing! 😅 But I’m back, and I promise to share what...
Mar 29, 2025150 views - 04
A look at the production-grade architecture patterns Jitu learned while pairing with senior engineers.
Hello techies🤗! 🚀 Today’s Tech Exploration: Lessons Learned Pairing with Senior Engineers on Production Systems When I started collaborating closely with seni...
Aug 24, 2026108 views
In their own words.
Zero Fluff: Short, scannable posts for busy devs.
To master System Design, you have to follow the data.
Fresh from the channel.
በኦሮሚያ ቱሪዝም ሳምንት 2026 (Oromiya Toursim Week 2026) ላይ የሰራነው አፕሊኬሽን የ "Best Tourism Tech Solution Award" (የምርጥ ቱሪዝም ቴክኖሎጂ መፍትሔ አሸናፊ) እጩ ሆኖ ቀርቧል። በዚህ ሊንክ በመግባት ድምፅ (vote) አርጉልን። 🙏 🔗 https://vote.visitoromia.org/best-tourism-tech-solution-of...
🌻✨ Happy New Year, Hello World family! 🇪🇹🌻 As we step into a new year, I just want to say thank you for being here. 🙏🏾 What started as a small place to share the things I learn, discover, and find useful has grown into a little commu...
anthropic.com/campus
Hello techies🤗! 🚀 Today’s Tech Exploration: Lessons Learned Pairing with Senior Engineers on Production Systems When I started collaborating closely with senior engineers on enterprise systems, I saw a massive gap between standard hobby p...
Hello world 🙌🏽! 🚀 Part 2: Load Balancers: The Silent Guardians of Scale Yesterday, we followed a click. Today, we answer the real question: 👉 How do systems NOT crash when millions click at once? Enter the Load Balancer the unsung...
🚀 Part 1: The Secret Life of a Click Ever wondered what happens in the split second between hitting Send and seeing that checkmark? It’s not a straight line, it’s a high-speed global relay race. 🏃💨 To master System Design, you have to f...