alt Hacker NewsI'm finding that unexpected cache rewrites cost me huge.
I have 1h cache TTL set, and do nothing to cause rewrite (response in time, no model/effort/tool changes).
At 400K tokens in, I'll write a message, and /usage shows only a small increase in cache write. On the next message, cache writes shows 800K, and by the end, I often hit 2M cache writes with no explanation.
This seems to happen when: using /btw, asking it to review code, other random times. Anyone know what's going on?
Replies
Esras • yesterday at 10:47 PM
You may be running into a "known" bug with Claude Code: https://github.com/anthropics/claude-code/issues/63930
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radlad • yesterday at 7:40 PM
I have long suspected but not confirmed that /btw uses a lower tier model like Haiku.
Depending on how you're triggering reviews, you may be using a sub-agent?
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To not answer your question, I have a claude stop hook that my status line uses to tell me how close my cache is to expiring https://pastebin.com/JLXUG16Q
_entirely_ vibecoded don't @ me.