Verified75% confidenceSolutionExact time
To maximize cache hit rate, stable content (system prompts, file contents) should be placed at the prefix of the prompt, with dynamic content appended at the end
3
Sources
75%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
Kun: An Open-Source AI Coding Agent Deeply Optimized for DeepSeek
bilibili人猿菜山7/7/2026
Related Claims
VerifiedThe general principle for achieving cache hits is to keep the prefix of the request context as stable as possible, placing fixed content such as system prompts and tool definitions at the very front, with per-turn user input appended at the end.77% similarUnverifiedTo maximize prefix reuse, stable, unchanging content (system prompts, tool schemas) should be placed at the beginning of the prompt, with variable content placed at the end.74% similarUnverifiedCore techniques of context engineering include separating stable system prompts from dynamic content, compressing or summarizing historical turns, and trimming tool return values.73% similarUnverifiedFor Agent applications with long system prompts or repeated use of the same documents, having the high-frequency repeated portions appear stably at the beginning of requests can improve cache hit rates and leverage lower pricing tiers.70% similarUnverifiedWhen using long-context models, input context should be streamlined and the entire codebase should not be stuffed into the prompt; precisely filtering relevant files both saves tokens and improves output quality.70% similar
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