---
title: "Discussion on \"Semantic Caching for LLMs: The False Hit Problem Your Dashboard Can't See\" | Hashnode"
description: "Discussion on \"Semantic Caching for LLMs: The False Hit Problem Your Dashboard Can't See\". Why similarity thresholds can't separate 'same question' from 'close question', and a two-key cache design you can ship this week"
url: "https://hashnode.com/posts/semantic-caching-llm-false-hits/6aeff7aa2d3bff906653d9ea"
---

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# [Semantic Caching for LLMs: The False Hit Problem Your Dashboard Can't See](https://simplyexplained.hashnode.dev/semantic-caching-llm-false-hits?utm_source=hashnode&utm_medium=feed)

Why similarity thresholds can't separate 'same question' from 'close question', and a two-key cache design you can ship this week

2d ago · 12 min read · simplyexplained.hashnode.dev  
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-   [#llm](https://hashnode.com/tag/llm)
-   [#caching](https://hashnode.com/tag/caching)
-   [#ai](https://hashnode.com/tag/ai)
-   [#system-design](https://hashnode.com/tag/system-design)
-   [#python](https://hashnode.com/tag/python)

## Written by

[Adam Jaber](https://hashnode.com/@adamjaber)

@adamjaber · Delhi, India

  
[View profile](https://hashnode.com/@adamjaber)

Senior engineer. How AI and software work — and where they quietly break.

I'm a senior software engineer. I write Simply Explained, a plain-English breakdown of how AI and software actually work, and the quiet ways they break: AI fixes that hide bugs, agents that pick the wrong tool, health checks that take down healthy servers. One symptom, one analogy, one fix per piece. New here? Start with the pinned Start Here guide, or get one breakdown a week by email.

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