https://www.chenk.top/en/tags/prompt-caching/Recent content in Prompt-Caching on Chen Kai BlogHugoenSat, 04 Apr 2026 09:00:00 +0000https://www.chenk.top/en/llm-engineering/09-prompting/Sat, 04 Apr 2026 09:00:00 +0000https://www.chenk.top/en/llm-engineering/09-prompting/<p>A prompt that works on 100 examples in a notebook can fail on 10% of inputs in production for reasons unrelated to cleverness. This chapter covers prompting as an engineering task: where chain-of-thought helps (and where it doesn&rsquo;t), how prompt caching affects costs, how to combine few-shot, chain-of-thought, and self-consistency without using every trick, and how to defend against jailbreaks and injections that production traffic will generate within a week of launch.</p>