Commercial transition
Previous stateBefore 1 September 2026, Cloudflare had published D1 free-tier daily row-read and row-write limits without the current query-failure enforcement behavior described for accounts that exceed them.
→New stateOn Workers Free, D1 queries return errors through the Binding API and REST API after the account exceeds its daily row-read or row-write limit, until the quota resets at midnight UTC; stored data remains unaffected.
Who is affected
Cloudflare Workers Free accounts whose D1 workloads can exceed the published daily row-read or row-write allowances.
Action required
Monitor D1 query activity and alert emails, add indexes and reduce full-table scans where appropriate, then wait for the midnight UTC reset or evaluate Workers Paid if the workload requires higher limits.
Evidence boundary
Cloudflare proves query failure after the named free-tier daily limits, the midnight UTC reset and that stored data is unaffected. It does not state that paid-plan pricing changed or that crossing the limit deletes or corrupts data.
Timeline
- Free-tier daily limit enforcement began
D1 began returning errors after an account exceeds its daily row-read or row-write allowance.
Official sources
- D1 enforces free tier daily query limitsCloudflare · 2026-09-01 · Official Cloudflare developer changelog