---
title: "Discussion on \"🧱 Hash Tables\" | Hashnode"
description: "Discussion on \"🧱 Hash Tables\". Fast Lookups with Key-Value Mapping"
url: "https://hashnode.com/posts/hash-tables-fast-lookups-with-key-value-mapping/68223e352fcee9a162cff3d4"
---

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# [🧱 Hash Tables](https://ns717.hashnode.dev/hash-tables-fast-lookups-with-key-value-mapping?utm_source=hashnode&utm_medium=feed)

Fast Lookups with Key-Value Mapping

May 12, 2025 · 5 min read · ns717.hashnode.dev  
Updated Dec 18, 2025  
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## Written by

[Nitin Singh](https://hashnode.com/@ns717)

@ns717 · India

  
[View profile](https://hashnode.com/@ns717)

"Software Engineer | Problem Solver | Blogger | Passionate About Software Engineering | Writing on Java, Backend Systems & Clean Code"

I'm a passionate Software Engineer with over 12 years of experience working with leading MNCs and big tech companies. I specialize in Java, microservices, system design, data structures, problem solving, and distributed systems. Through this blog, I share my learnings, real-world engineering challenges, and insights into building scalable, maintainable backend systems. Whether it’s Java internals, cloud-native architecture, or system design patterns, my goal is to help engineers grow through practical, experience-backed content.

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