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Server Rack // Blog

Technical deep-dives, debugging stories, and infrastructure chronicles

ai

Cutting AI Costs by 42% While Getting Faster: A Groq Migration Story

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Development Homelab
• 12 min read

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

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hom

Running WordPress + Apps on My Homelab with Cloudflare Tunnels

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infrastructure
• 7 min read

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

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ai

When Two AI Agents Debug Themselves: A Tale of Redis, Docker, and Distributed Problem-Solving

•
Development Homelab
• 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

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