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learn by building real apps.

No dry lectures or generic walls of text. Master full-stack web architecture, AI agents, and modern frameworks through interactive visual diagrams, hands-on courses, podcasts, and blog posts with AJ.

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Blog& Diagrams
codingcat-app-flow.diagram
VISUAL DIAGRAM
Root Orchestrator
<CodingCatApp />
?Router & Auth
STATESignals Engine
DATAEdge Cache
✏️ AJ's Tip:

“No bloated build tools. Pure edge speed!”

⚡ WebSockets & AI Stream
Follow the purple yarn trail down the page ↓
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Purrfect code! 🐾

learn by building.

Visual diagrams first. Real code second. Ship faster.

✏️ Updated Weekly
SYSTEM ARCHITECTURE DIAGRAM
Full-Stack SSR
Sunny Yellow↓↓Candy Purple
Code
Schema
node
verify ✓
Config
edge
deploy 🚀

Visual architecture diagram

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meet real codingcat
learners & guests

PODCAST

Unfiltered engineering talks on modern web frameworks, edge compute, and AI agent architectures.

FEATURED PODCAST EPISODEWatch Video
GenAI for Engineers, What's Real, What's Not and What's Coming

GenAI for Engineers, What's Real, What's Not and What's Coming

Full Video + Interactive Show Notes

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step-by-step courses & lessons

courses.

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latest blog posts.

Chronological blog posts, hands-on code guides, and visual architecture diagrams.

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The Heads of AI wearing black company logo t-shirts and shaking hands in a circular web of cloud and GPU investments
Blog Post

Anthropic's S-1, $518B in cloud commitments, and circular AI capex

Anthropic just filed its Form S-1 for a Nasdaq IPO under ticker ANT, revealing $518B in take-or-pay cloud commitments to Google, AWS, and Microsoft. Here is how Mark Zuckerberg, Elon Musk, Jensen Huang, Sundar Pichai, Satya Nadella, Tim Cook, and Dario Amodei built a circular revenue machine, and what happens to your S&P 500 ETF if it stalls.

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PHP2Shell (CVE-2026-109618): How AI Found a Decade-Old Bug in 70% of the Web
Blog Post

PHP2Shell (CVE-2026-109618): How AI Found a Decade-Old Bug in 70% of the Web

Two critical pre-authentication RCE flaws in PHP (CVE-2026-109618 and CVE-2026-109619), uncovered by AI models from OpenAI and Google Gemini, sparked a global patching scramble across 70% of the web. Here is how PHP2Shell works and how to patch your servers.

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Sanity Knowledge Bases
Blog Post

Sanity Knowledge Bases

Eliminate query-time guessing in your AI agents. Learn how Sanity Context Knowledge Bases compile structured datasets, crawled documentation websites, and uploaded files ahead of time, resolve conflicting facts, and serve a compact outline over Context MCP.

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The Five Layers of Agentic Context: Why Canon Only Turns When Someone Signs Off
Blog Post

The Five Layers of Agentic Context: Why Canon Only Turns When Someone Signs Off

A deep-dive review of Magnus Hillestad's Five Layers of Agentic Context on the Sanity blog, exploring why Situation, Records, Memory, Process, and Canon move at different speeds, plus a working interactive HTML/SVG Situation-to-Canon wheel you can drop into any webpage.

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⚡ ARCHITECTURE NOTE

“Build apps by understanding the network boundary.”

export async function GET({ locals }: APIContext) {
  // Stream Sanity content + edge HTML in a single roundtrip
  const data = await locals.sanity.loadQuery(homePageQuery);
  return new Response(JSON.stringify(data), {
    headers: { "cache-control": "public, s-maxage=3600" },
  });
}
📌 AJ's Architecture Rule:

“Streaming edge HTML beats heavy client-side hydration bundles every single day of the week!”

VERIFIED ON WORKERS✓ 100% A11Y