Self-taught developer / Systems notes

A quiet place for
life, systems,
and long learning.

I am Huynh Nhan Quoc, a self-taught developer from Tam Ky, Vietnam. I have been learning through real products, broken deployments, private systems, and years of starting again. This site keeps that road in one place: the ideas, the work, and the life around them.

Read the latest Read my story

2015 Started learning

Tam Ky Home

Go + JS Working tools

In public Current chapter

Ways into this site

Enter through the question you have.

01 / What is it? Concepts Runtime, bytecode, VM, JIT, compiler, tenant, and the words behind the code. 02 / Why did I learn it? Articles Long essays, field notes, failures, and lessons gathered over time. 03 / How did I build it? Projects Working experiments where ideas have to survive contact with real use. 04 / Who is behind it? About A shorter introduction, the journey, beliefs, and ways to reach me.

Explore the archive

One body of work, several ways in.

Look up one concept, follow a topic across formats, or begin with a collection selected in reading order.

choose where to begin

concepts: 31
articles: 64
topics: 20
collections: 4

Featured collection Runtime foundationsA path through source code, bytecode, virtual machines, and the boundaries of execution. 9 entries

Now

What is moving today.

Live from the archive and source

Building Kitwork Runtime workbench for multi-tenant websites Learning / 2026-07-09 Zero VM A beginner-friendly guide to understanding requests that bypass VM execution. Writing / 2026-08-23 I Never Planned to Build a Database. I Just Wanted Kitwork to Manage Thousands of Websites More Simply. Source / a22edf8 language and .ui expressions follow JavaScript; lazy rendering; no server paths in answers - Numbers: Number, parseInt, parseFloat and unary + are JavaScript's ToNumber (null is 0); Infinity, NaN, isNaN, isFinite and Number.* exist; division and remainder by zero follow IEEE; == and === compare numbers exactly (the 1e-12 tolerance is gone, NaN !== NaN); ++ and -- convert the old value first (STEP, bytecode 4). KitSQL keeps SQL's NULL. - A write through a value that cannot hold properties (null, a string, a number…) is a TYPE error. - .ui {{ }}: the server's first paint evaluates with a JavaScript value model (jit/hydrate js*.go) and gives the kernel's answer; parity_corpus.json checks both ends against each other. Several {{ }} in one text are one expression on both ends, and component inputs keep NaN, Infinity and undefined on their way to the browser. - .ui lazy="true" | "<height>": content-visibility:auto with an intrinsic height; print shows everything; the compiler warns where it cannot help. - Legacy templates (frozen, to be removed once the sites move to .ui): {{ if a OP b }} compares values; a missing shell or layout no longer writes a server path into the page in production (the detail goes to the log). - CompilerSchemaVersion 11. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> 2026-10-16

Fresh from the long road.

The path from text to behavior.

01 Source

02 Lexer

03 AST

04 Compiler

05 Bytecode

06 VM

Runtime

The place where code receives memory, values, limits, and a world in which to run.

Bytecode

The compact instruction layer between source language and machine behavior.

Virtual machine

A machine made of software that reads those instructions and enforces their boundaries.

explore all concepts

The road so far

Not a straight line.

2015

Blogger and HTML. The first small changes that made the hidden structure of a website visible.

2018

A friend's coffee shop and a Firebase night. Dependency stopped being an abstract technical word.

2020

Home, delivery work, and Kitstack. Real projects began shaping a private Go platform.

Now

Opening the useful parts. Kitwork, concepts, articles, and source code turn private lessons into public material.

Short journey Full story

This site is also an experiment

The URL follows the directory tree.

Each folder can inherit layout, metadata, and runtime behavior from the folders above it. The page you are reading is both a personal homepage and a working Kitwork tenant.