Umar's Garden

Umar's Garden

May 01, 20261 min read

  • garden
  • index

These are public notes on backend engineering, infrastructure, reliability, AI systems, and the craft of writing operational knowledge.

This garden is intentionally curated. My private vault contains working notes, raw source material, client context, and personal records. The notes here are rewritten for public reading.

Start here

  • About
  • Now

Engineering

  • Building a Personal Homelab Without Burning Out
  • Cloudflare Mesh vs Tunnel
  • Containerizing Serverless Workloads
  • Failure-Mode Thinking as a Design Discipline
  • GitOps Is a Recovery Pattern
  • Migration Checklists Should Start With Rollback
  • Mesh VPNs Are Access Paths, Not Authorization
  • Production Readiness Is a Set of Invariants
  • Runbooks Are Interfaces
  • Small Team Infrastructure Decisions

AI and knowledge systems

  • Agent Access Should Be Narrower Than Human Access
  • Agent Memory Is Retrieval Policy, Not Storage
  • LLM Maintained Knowledge Bases Need Boundaries
  • System of Record vs Agent Layer
  • What RAG Actually Solves (and What It Doesn’t)

Craft and career

  • A Three-Layer Pattern for AI-Maintained Notes
  • How I Write Operational Notes
  • Reading a Tech Hiring Pipeline From the Outside
  • Support Engineering as Production Engineering

Graph View

  • Start here
  • Engineering
  • AI and knowledge systems
  • Craft and career

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