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engineering2026-08-1810 min read

The Real Bottleneck at 1 Million RPS

A real 1M req/sec benchmark on AWS. The database broke exactly once. Here's what broke the other four times, and what actually fixed each one.

#performance#scalability#aws#redis
cat post.md
security2026-08-1716 min read

I Asked an AI Agent to Go Live. It Opened My Server to the Whole Internet.

A live test of DeepSeek Harness, a self-hosted AI coding agent, shows what happens when an obedient agent is asked to expose a server, and why the firewall around it mattered more than the model inside it.

#security#ai-agents#infrastructure#deepseek
cat post.md
engineering2026-08-1024 min read

How Claude and Codex Learned to Tag Each Other

Block's Buzz gives AI coding agents their own keypairs and channel membership. A code-level walkthrough of how one agent wakes another up, with no orchestrator.

#ai-agents#acp#nostr#claude-code
cat post.md
business2026-08-0642 min read

The AI Boom Is Real. The Layoffs Are Real. They're Not the Same Story.

Tech firms are spending $750B on AI while cutting six-figure layoffs since 2023. A complete, sourced breakdown of who's actually hurt, why, and what's next.

#ai#tech-layoffs#economy#jobs
cat post.md
engineering2026-08-0414 min read

Find out where your latency actually goes

A measurement procedure that tells you which layer of your stack owns the delay, before you optimize the wrong one. Worked through on a system that turned out to be 98% network.

#performance#latency#networking#measurement
cat post.md
engineering2026-07-307 min read

Serve Static Files with Nginx Without Breaking Your MIME Types

Nginx serves your HTML fine but hands back CSS as text/plain. Why the obvious types{} fix breaks HTML, and what to use instead.

#nginx#web-server#mime-types#static-files
cat post.md
engineering2026-07-2717 min read

MCP: The USB-C of AI, Explained Properly

MCP is called the USB-C of AI. What that analogy actually means, why AI tool calling needed a standard, and what MCP still does not solve for you.

#mcp#model-context-protocol#ai-agents#tool-calling
cat post.md
security2026-07-1813 min read

CVE-2026-63030: WordPress Pre-Auth RCE Explained

CVE-2026-63030 is critical, but automated exploitation fails on one overlooked detail that 70% of production sites already defend against.

#wordpress#cve-2026-63030#security#exploitation
cat post.md
engineering2026-07-167 min read

One Server Per Customer Domain Doesn't Survive Contact With Scale

Per-customer TLS breaks past a few hundred domains. How a shared edge resolves millions of custom hostnames: the registration payload, priority rules, and the RFC forcing an apex workaround.

#cloudflare#cloudflare-for-saas#multi-tenant#dns
cat post.md
engineering2026-07-1311 min read

Automate Your Project with GitHub Actions: Testing, Deployment, and npm Publishing

A hands-on guide to GitHub Actions: local testing with act, automated test/deploy/npm-publish workflows, cron schedules, custom actions, and 2026 platform updates.

#github-actions#ci-cd#devops#automation
cat post.md
life2026-07-068 min read

The 7 Levels of Logical Thinking

From gut instinct to Gödel: a personal walk through how logical reasoning escalates from everyday intuition to research-grade abstraction, and which rungs actually matter.

#logic#critical-thinking#mental-models#philosophy
cat post.md
psychology2026-07-055 min read

Why Powerful People Suddenly Disappear: The Psychology of Power, Explained

Why the most successful people seem unreadable — never oversharing, occasionally vanishing, always a step ahead. The psychology of power unpacked into blunt, practical rules.

#power#psychology#robert-greene#influence
cat post.md
psychology2026-07-054 min read

What Are You Willing to Be Disliked For?

Mark Manson argues confidence, people-pleasing, and purpose are one knot: an unwillingness to be uncomfortable. Untie that, and everything else loosens.

#confidence#purpose#self-improvement#mark-manson
cat post.md
LATEST NOTEScd notes
2026-07-05Day One