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

D1darylginn-d1-missing-index

D1: an author reports a $3,500 bill in 48 hours and a full waiver.

@darylginn reports about $3,500 in D1 charges over 48 hours. He says an AI-assisted Postgres migration omitted indexes and caused about 970 billion row reads daily, and that Cloudflare waived the bill.

What happened

Reported cause
Read volume
Incident date
Date not recorded
First reported
2026-07-29 09:15 UTC

Latest reported outcome

The author says Cloudflare waived the full D1 bill as a goodwill gesture.

View this update in the timeline

Original sources

Each entry links to the report or reply it describes.

Case timeline

  1. Author reports a waived bill

    Read on 𝕏

    The author says Cloudflare waived an accidental $3.5k bill.

    Daryl Ginn

    @darylginn · Original 𝕏 post

    Cloudflare are legit, they waived an accidental $3.5k bill for me.
  2. Amount and 48-hour context

    Read on 𝕏

    The author reports $3.5k of D1 charges in 48 hours and a full goodwill waiver.

    Daryl Ginn

    @darylginn · Original 𝕏 post

    I don't really give props much, but I wanna shout out @cloudflare. A while ago I accidentally racked up $3.5k in D1 charges in only 48 hours through fault of my own. They completely waived it out of good will.
  3. Migration and row-read explanation

    Read on 𝕏

    The author says an AI-assisted Postgres-to-D1 migration omitted indexes, producing about 970 billion reads a day.

    Daryl Ginn

    @darylginn · Original 𝕏 post

    I had AI migrate a postgres database to D1, but for some reason it chose not to create indexes, which is basically database 101. I was getting ~970 billion (yes, billion) row reads per day. The funny thing is if I had not used AI this would never have happened.
Durable Objects

shmily7: a Durable Object alarm loop and a reported $10,000 bill.

@shmily7 reports a roughly $10,000 bill from a Durable Object alarm loop in an unused test project and later says a requested reduction was refused.

Author experienceWorkers +4

Cloudflare billing pitfalls thread

The author organizes Cloudflare billing risks by product and shares experience with budget alert emails.

R2

R2 replication frequency: an author reports a bill close to $100.

@lucianghinda links a bill close to $100 and over 20 million R2 Class A operations to Litestream setups without a replication interval.

On this page

Reported amount · USD

$3,500

Open original sourceCollection policy

Replies & outcomes

Billing outcome
Bill waivedAuthor-reported
Case progress
ResolvedAuthor-reported
Public Cloudflare reply
Not linked