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Source-linked reports: Amounts and outcomes come from the original reports and linked replies.

D1stefanr0sca-d1-missing-index-budget-alert

A missing D1 index made every lookup scan a 306,000-row table, a four-figure invoice with no budget alert.

Community user stefanr0sca, who relies on an AI coding assistant, says a missing index made every lookup scan a 306,000-row table and produced a four-figure invoice; the exact amount is not given. He says the $10 budget alert created automatically when he upgraded showed $0.00 for the whole cycle and never sent a notification, that the support case was closed automatically after a decision was promised, and that he could not reopen it or open a new one.

What happened

Reported cause
Read volume
Incident date
Date not recorded
First reported
2026-09-14
Billing outcome
Not recorded
Case progress
Not established
Public Cloudflare reply
Not linked

Original sources

Each entry links to the report or reply it describes.

Case timeline

  1. Author reports the bill

    Open original source

    The author describes a four-figure D1 invoice from a missing index, a $10 budget alert that showed $0.00 and never notified, and a support case closed automatically.

Author experienceWorkers +7

Lanshu: an AI-assisted Cloudflare billing risk checklist

Lanshu (@LufzzLiz) shares a six-step prompt for checking account ownership, usage, runaway consumption and budget alerts. Replies add alarm logging, email delivery checks and separate notifications.

D1

D1 status writes: an author reports a 150-dollar charge and refund.

@wofuhuola describes a generated tool writing Reddit post statuses globally every five minutes and deleting expired rows. The author says one month cost 150 dollars, went unnoticed for three months, and was later refunded after an appeal.

Author experienceAccount-wide usage-based products +1

Why hard spending caps take time: Ashley Peacock on billing latency

Ashley Peacock (@ashleypeacock), who works on Durable Objects at Cloudflare, explains from experience why near-real-time spending caps are hard to build, says hard billing caps are coming soon, and suggests budget alerts plus issue alerts in the meantime.