Marco Patzelt
Full-Stack Engineer
Node.js Middleware, Vercel & Enterprise Integration. Building the future of agentic orchestration — scalable, serverless, and production-ready.
Germany
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Latest Articles
Feb 4, 2026
8 min read
Qwen3-Coder-Next Review: 70% SWE-Bench, Free, Runs Local
Free, open-source AI that scores 70.6% on SWE-Bench with only 3B active params. Runs on a Mac Mini, no API key needed. Tested against Opus 4.6 and GPT-5.
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Jan 9, 2026
3 min read
Serverless Race Conditions: Redis Locking (Next.js)
Serverless scales infinitely but your database does not. How to prevent race conditions and overselling using Redis and Vercel KV. No Kubernetes needed here.
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Feb 7, 2026
6 min read
Claude Opus 4.6 Fast Mode: 2.5x Faster, 6x More Expensive
Opus 4.6 Fast Mode costs $30/$150 per MTok versus $5/$25 standard. You pay 6x more for 2.5x speed. Full cost breakdown and competitive analysis inside.
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