E11000 - Hayden's Server Room

How to Fix MongoDB ‘E11000 duplicate key error collection’

If you’ve been working with MongoDB for any length of time, you’ve probably encountered the dreaded E11000 duplicate key error. […]

How Diffusion Models Work in 2026: From Noise to Images
Type a sentence into Midjourney or Stable Diffusion and a picture comes back in seconds. The technology running underneath is the diffusion model.… Read more: How Diffusion Models Work in 2026: From Noise to Images
Memory vs System Semiconductors: A 2026 Guide to RAM, ROM, DRAM, and the Rest
If you have ever read a chip headline and watched RAM, ROM, DRAM, system semiconductors, and “non-memory” pile up in a single paragraph,… Read more: Memory vs System Semiconductors: A 2026 Guide to RAM, ROM, DRAM, and the Rest
What Is RAG? How AI Learns to Stop Making Things Up
If you’ve ever watched an AI confidently state something completely wrong, you’ve witnessed hallucination firsthand. RAG — Retrieval-Augmented Generation — is the architectural pattern… Read more: What Is RAG? How AI Learns to Stop Making Things Up
Excel XLOOKUP #SPILL! Error: How to Fix!
If you’ve upgraded to Microsoft 365 and suddenly your XLOOKUP formulas are throwing a #SPILL! error where nothing used to fail — you’re not… Read more: Excel XLOOKUP #SPILL! Error: How to Fix!
Meta’s AI Glasses — The Post-Smartphone Era Is Already Here
In 2026, a device that surfaces information in your line of sight without pulling out your phone — and lets you control it with… Read more: Meta’s AI Glasses — The Post-Smartphone Era Is Already Here