Don't Rush to Clear History — Understanding KV Cache Will Change How You Think About LLM Conversation Strategy

Many people have an intuition when using LLMs: longer conversations mean more expensive tokens, so you should summarize and compress history early. When building Agent Loops, some merge multi-turn conversations into a single "stateless message" to save tokens. Both approaches seem clever but are actually anti-optimizations. This article explains from KV Cache principles why keeping the original history intact is the optimal strategy. The Most Common Misconception: Proactively Summariz...