billflare.

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

D1picturepan2-d1-row-reads

Yan Zhu (picturepan2): about $400 from a D1 row-reads spike.

Yan Zhu (@picturepan2) says he also hit an about $400 Cloudflare bill the previous month when D1 database row reads spiked. He quotes the shmily7 Durable Objects thread for context and does not report a refund or support outcome.

What happened

Reported cause
Read volume
Incident date
Date not recorded
First reported
2026-10-13 03:49 UTC
Billing outcome
Not recorded
Case progress
Not established
Public Cloudflare reply
Not linked

Latest reported outcome

The author reports the bill but does not state a refund, credit, or case closure.

View this update in the timeline

Original sources

Each entry links to the report or reply it describes.

Case timeline

  1. Author reports about $400 D1 row-reads bill

    Read on 𝕏

    The author says last month’s Cloudflare bill was about $400 after D1 row reads spiked.

    Yan Zhu

    @picturepan2 · Original 𝕏 post

    我上个月也遭遇过 Cloudflare 400U 的账单,读 D1 数据库 row reads 爆了 https://t.co/wd9asEx5QN
Author experienceAccount-wide usage-based products

A budget alert is a horn, not a brake

@GUYUE_LGY points to Cloudflare’s Budget alerts documentation: alerts send email when spend crosses a threshold but do not pause or cap usage. Before letting AI run unattended, the author checks what actually happens at the line.

Durable Objects

A simulation game, a reported $4,483.74 in Durable Object reads.

Jonathan Mann (@songadaymann) reports spending $4,483.74 on Durable Object reads while building a simulation game. Rita Kozlov replies, “let us see what we can do”; Mann thanks her, and she replies that she is DMing him for details.

Author experienceWorkers +4

Cloudflare billing pitfalls thread

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