May 27, 2026
Free-tier guardrails are architecture
A zero-cost system needs explicit limits in the code, not only in the bill.
- operations
- cloudflare
Free-tier design is not only about picking free products. It is about designing the system so accidental usage spikes are visible and recoverable.
This project keeps the expensive surface small. Static site requests do not invoke a Worker. Private writes require authentication. KV operations are logged with the key and operation type, so usage patterns can be inspected before they turn into confusing failures.
The result is intentionally modest: a system that can grow because the first version is easy to reason about.