I run a paid infrastructure service. Alone. No co-founder, no on-call rotation, no senior engineer to escalate to. My only collaborator is Claude Code, and after about a year, my persistent memory has grown to 60+ entries.

Those entries have become more valuable than any runbook I've written. They've also taught me — painfully — what makes memory architecture work and what makes it quietly fail.

If you're running anything solo with an AI agent, here are five lessons I wish I'd burned into my brain on day one.

1. Write the why, not the what

The first instinct when you start using persistent memory is to log what you did. "Migrated service X from tool A to tool B." "Switched protocol from X to Y."