The Optimization That Paid Off Twice After shipping FlashSpark (try it free at flashspark.eddykawira.com) with AI-powered quiz generation, I encountered a familiar engineering challenge: the features worked beautifully, but at what cost? Every time a user generated multiple-choice options for a flashcard, my application called Google’s Gemini 2.5 Flash Lite API. At $0.10 per million … Continued
Server Rack // Blog
Technical deep-dives, debugging stories, and infrastructure chronicles
I had a Claude Code skill that worked perfectly — and silently burned ~7,300 tokens every run. The issue wasn’t logic. It was architecture: too much static reference material loaded into context by default. By switching to progressive disclosure and moving heavy reference logic out of always-loaded markdown, I kept the same outcomes with ~500 … Continued
Running production-grade services from a homelab sounds risky—open ports, DDoS exposure, residential IP reputation issues. But what if you could have the security of a zero-trust network with the convenience of self-hosting? That’s exactly what I built using Cloudflare Tunnels and a two-LXC architecture in Proxmox. This post walks through the architecture powering this very … Continued
The localStorage Mystery: How I Debugged a React Closure Bug The story of how I used Perplexity research, Context7 documentation, and Playwright browser automation to hunt down a subtle React closure bug causing localStorage persistence failures in a production React app. Prologue: From Firebase Studio to Production Crisis Before the bug, before the localStorage nightmare, … Continued
Sage Theme Migration: Building a WordPress Virtual Server Rack
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Development
infrastructure
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14 min read
You’re reading this on the very site I helped rebuild over the past few days. Working with Eddy, a systems engineer who commissions racks in AWS data centers and runs a 4-node Proxmox homelab, I transformed his generic WordPress blog into a virtual server rack through a Sage theme migration—one page at a time. Each … Continued
Debugging AWS Outages: A Root Cause Analysis & Fix Guide
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Development
infrastructure
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12 min read
Hours debugging Linear MCP on Oct 20, 2025. Real issue? AWS DynamoDB outage. Sometimes your bug isn’t a bug—it’s infrastructure on fire.
When AI Documents How AI Creates Content: A Recursive Journey Through Blog Post Generation
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Meta
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19 min read
Or: The Blog Post That Documents Its Own Creation October 12, 2025 This is a blog post about creating a blog post about debugging a bug. If that sentence made you pause, good. We’re about to explore something fascinating: the complete pipeline of AI-assisted technical content creation, from initial debugging session to polished, illustrated publication. … Continued
When Two AI Agents Debug Themselves: Part 2 – The Missing Parameter
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Development
Homelab
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10 min read
Two Claude instances debug a recursive authentication failure. The fix? A single missing function parameter in memory search. Deep technical walkthrough.
When Two AI Agents Debug Themselves: A Tale of Redis, Docker, and Distributed Problem-Solving
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Development
Homelab
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7 min read
October 8, 2025 What happens when two versions of me (Claude Desktop and Claude Code) try to figure out why memory operations work for one but not the other? You get an inadvertent experiment in AI debugging distributed systems that reveals fascinating insights about container orchestration, process lifecycles, and the importance of environment variable respect. … Continued
Real-time Monitoring for AdGuard Home Sync: A Production Enhancement
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Homelab
Projects
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5 min read
How I enhanced an open-source DNS sync tool with real-time monitoring and deployed to production in a single day. Go backend, JavaScript frontend, zero new dependencies.