// AI
InfiniBand AI GPU Clusters Ethernet RDMA RoCE Network Design Data Center NVIDIA Ultra Ethernet

InfiniBand for AI Clusters: Why Ethernet Isn't Enough (Yet)

Every major AI training cluster runs InfiniBand. The $5 trillion question is whether Ultra Ethernet will change that. The honest answer: not yet, and here's exactly where the gap is.

Rene Fichtmueller / 2026-05-30 / ~3 min read min read
LLM Gateway AI Circuit Breaker Failover Production AI TypeScript Fastify Confidence Scoring Ollama Architecture

LLM Gateway Patterns: What We Learned After 50,000 Requests

Circuit breakers, confidence scoring, failover chains — an LLM gateway isn't a proxy. After 50,000 production requests through our internal gateway, here's what the patterns actually look like.

Rene Fichtmueller / 2026-05-21 / ~2 min read min read
AI GPU Cluster Optical Networking 400G 800G RoCEv2 RDMA Data Center InfiniBand Network Fabric H100 B200 LPO Machine Learning HPC

AI Fabrics Need Different Optics — GPU Clusters Are Not Normal Data Centers

Your data center runs web applications. Your procurement team buys optics for web application traffic. Then someone installs a GPU cluster, and the optics team discovers that AI fabric traffic

Rene Fichtmueller / 2026-04-28 / ~4 min read min read
AI Software Engineering Local LLM Build in Public LLM CostEfficiency RapidDevelopment

What I Built in 30 Days With My Local LLM Stack

In 30 days, I built over 20 production projects using my local AI model stack, achieving what would have taken months with traditional methods.

Rene Fichtmueller / 2026-04-10 / ~2 min read min read
Open Source Claude Code AI Productivity Memory System Developer Tools CLI Context Management TypeScript

Claude-Cortex: Giving Claude Code a Long-Term Memory

Claude Code forgets everything between sessions. I built a structured memory system that fixes that — no database, no server, just Markdown files.

Rene Fichtmueller / 2026-04-05 / ~2 min read min read
Open Source AI Writing Quality Content Detection AI Slop NLP Developer Tools TypeScript Writing Tools

Slop-Radar: A Buzzword Detector for the Age of AI Slop

200+ English and 120+ German AI-style phrases. 14 structural patterns. Because "delve into" needs to die.

Rene Fichtmueller / 2026-04-05 / ~2 min read min read
Open Source AI Document Intelligence MCP Paperless-ngx OCR RAG Ollama TypeScript Knowledge Management

PaperCortex: Adding a Brain to Your Document Archive

Paperless-ngx is great at storing documents. It's terrible at understanding them. PaperCortex fixes that.

Rene Fichtmueller / 2026-04-05 / ~1 min read min read
Open Source Security AI LLM ShieldX Prompt Injection Self-Learning Kill Chain MITRE ATLAS MCP Guard TypeScript

ShieldX: Why Prompt Injection Defense Needs to Evolve Itself

500+ detection patterns. 10-layer pipeline. Kill chain mapping. And it learns from every attack it sees.

Rene Fichtmueller / 2026-04-05 / ~2 min read min read