---
title: "Discussion on \"A Cache Key Is an Equivalence Relation\" | Hashnode"
description: "Discussion on \"A Cache Key Is an Equivalence Relation\". A retry should not become a new creative decision.\nWhen a video job fails halfway through and runs again, the user still asked for the same scene. If a timestamp or retry count changes the lookup, the"
url: "https://hashnode.com/posts/a-cache-key-is-an-equivalence-relation/6a7106ae3366f9f4bfabcf2c"
---

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# [A Cache Key Is an Equivalence Relation](https://craftedbydaniel.hashnode.dev/a-cache-key-is-an-equivalence-relation?utm_source=hashnode&utm_medium=feed)

A retry should not become a new creative decision. When a video job fails halfway through and runs again, the user still asked for the same scene. If a timestamp or retry count changes the lookup, the

Aug 3 · 4 min read · craftedbydaniel.hashnode.dev  
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-   [#caching](https://hashnode.com/tag/caching)
-   [#typescript](https://hashnode.com/tag/typescript)
-   [#videogeneration](https://hashnode.com/tag/videogeneration)
-   [#systemsdesign](https://hashnode.com/tag/systemsdesign)

## Written by

[Daniel Anthony Romitelli Jr](https://hashnode.com/@romiteld)

@romiteld · East Aurora NY

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

AI engineer. LLM agents, RAG, Azure AI Foundry, Python/TypeScript. Navy veteran. Builder of Scenematic, Pramaana, and production multi-agent systems. I write about what I actually ship.

Sr. AI Engineer & Architect. Building deterministic, context-aware AI for enterprise production.

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