santtiago49/system-design-trainer

Whiteboard for practicing system design interviews with a live capacity model

Learning & listsTypeScript

4.8 Early signal Magnitude out of 10 — how fast interest is growing, not a quality score. Star growth looks organic. Data as of September 28, 2026, 21:17 UTC.

Open on Seismograph Open on GitHub

About the project

A trainer for system design interviews: a whiteboard with draggable AWS/Azure components, a deterministic capacity model, and design grading by an AI assistant called Jev.

Useful for

Work through levels and build an architecture for a given user count
Check a design for SPOFs, missing load balancers, and direct DB access
Add a custom scenario in lib/scenarios.ts and practice on it

README summarized by DeepSeek V4.1 Flash. Details may be inaccurate.

Why it’s trending

87 stars so far today, about 97 expected by the end of the day.
The repository is 0 days old and already has 86 stars. With less than two weeks of history, there's no usual pace to compare the spike against yet.
Top new repositories this week: #191.

Stars per day

Bars are daily stars, the line is the usual pace. Red marks spike days.

Numbers

Total stars: 86
Today: 87 · ≈ 97 by evening
Forks: 4
Issues and pull requests: 0
Watchers: 0
Language: TypeScript
Created: September 28, 2026
Last push: September 28, 2026

Star trust

Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.

These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.

Spotted in

September 28, 2026Top new repositories this week: #191

README badge

Paste it into your README — the badge shows the current magnitude and links to this page.

[![Seismograph](https://gitnova.dev/badge/santtiago49/system-design-trainer.svg?lang=en)](https://gitnova.dev/en/r/santtiago49/system-design-trainer)

More in this category

7.6
cdyforever/how-to-live-better
A single-file HTML reading page for the open book "High Cost-Performance Life Guide" — 528 tips across 32 sections, searchable, offline-capable, zero dependencies.

BreakoutLearning & listsHTML+916 stars today, ≈ 1,039 by evening
6.4
cs341-illinois/coursebook
An open-source introductory systems programming textbook in C for the CS 341 course at the University of Illinois, covering Linux, POSIX, and memory. Built from LaTeX into PDF, Markdown, and HTML.

BreakoutLearning & listsTeX+293 stars today, ≈ 328 by evening
5.7
rohitg00/ai-engineering-from-scratch
Open-source AI engineering curriculum: 523 lessons across 20 phases (~342 hours) in Python, TypeScript, Rust and Julia, where every lesson ships a reusable artifact such as a prompt, skill, agent or MCP server.

BreakoutLearning & listsPython+592 stars today, ≈ 674 by evening
4.7
byoungd/up
An open book-guide on lifelong learning in the AI era: English, working with AI, real projects, recovering from setbacks. For ordinary people seeking direction.

BreakoutLearning & listsJavaScript+391 stars today, ≈ 439 by evening
4.2
public-apis/public-apis
A community-curated list of free public APIs across dozens of categories, from animals and anime to finance, geocoding and weather. Aimed at developers looking for a ready-made API for a prototype or product.

SteadyLearning & listsPython+202 stars today, ≈ 229 by evening
3.9
avinash201199/System-Design-KIT
A curated collection of resources, case studies, tools, and roadmaps for system design — from basic APIs to distributed architectures. For interview prep and engineer growth.

Early signalLearning & lists+9 stars today, ≈ 11 by evening