Source-linked reports: Amounts and outcomes come from the original reports and linked replies.
mcwangcn reports past D1 write charges of “over a thousand dollars.”
@mcwangcn says D1 writes previously cost over a thousand dollars and separately mentions Workers CPU charges without giving an amount.
What happened
- Reported cause
- Write volume
- Incident date
- Date not recorded
- First reported
- 2026-10-05 13:50 UTC
Latest reported outcome
The author gives no exact D1 amount or incident date. His reference to keking99 describes another author’s case.
View this update in the timelineOriginal sources
Each entry links to the report or reply it describes.
Case timeline
Thread of billing lessons begins
Read on 𝕏The author starts a thread about Cloudflare billing experiences.
yvonuk
@mcwangcn · Original 𝕏 post
这个帖子今天得到很多关注，看得出大家对Cloudflare的账单计费很感兴趣，我就再写个串推说说Cloudflare比较容易爆账单的几个点，都是我自己交学费换来的血泪教训，可能并不全面，欢迎大家补充🧵 https://t.co/MrerzXCOJR
Past D1 write charge disclosed broadly
Read on 𝕏The author says D1 writes previously cost over a thousand dollars.
yvonuk
@mcwangcn · Original 𝕏 post
1. Cloudflare D1 D1绝对称得上是CF账单杀手，我自己就被搞过上千刀。最大的坑是写入费用（每百万行1美元），如果你在workers里不注意sql用法，随便update all，当表格变大之后这个费用是很惊人的，尤其当数据库update与网络请求连在一起时更是分分钟爆单 pic.twitter.com/FvVKrYlnLf
Separate CPU-charge experience mentioned
Read on 𝕏The author separately mentions Workers CPU charges without giving an amount.
yvonuk
@mcwangcn · Original 𝕏 post
3. Workers Cloudflare Workers计费分两块：Requests和CPU time，这两部分都有可能爆单。比如@keking99最近的1000刀账单就主要来自海量Requests，而我自己之前则是被CPU time搞过。
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