cline-fix-volatile-msg

Cline burns cache breakpoints because it marks the last two user messages as ephemeral, which causes cache thrash and significantly reduces the cache hit rate by triggering unnecessary write premiums.

To improve cache hit rates in Cline, you can apply a fix that stops the system from marking the last two user messages as volatile, eliminating cache thrash and reducing unnecessary write premiums for Anthropic's Claude Code.

Yes, implementing the Cline cache optimization requires modifying specific files in the Cline repository to correct the handling of volatile user messages and prevent cache breakpoints from being burned.

Cache thrash in Cline user message handling occurs when volatile current user messages are marked as ephemeral, causing the system to continuously burn cache breakpoints instead of effectively reusing cached data.

This fix is specifically suitable for harnesses that use Anthropic's Claude Code, so users with similar setups can apply it to optimize their cache configuration, but compatibility with other platforms is not guaranteed.

You should not apply a cache thrash fix if your Cline setup does not experience cache breakpoint issues from volatile messages, as unnecessary modifications to repository files might introduce conflicts without yielding cache optimization benefits.