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UUID

Coding tips and build notes by Mahir Faysal, a student web developer in Bangladesh: tested Python, HTML, CSS, JavaScript and PHP tutorials, plus notes from my Next.js and Gemini projects. Sample posts are marked and drafts stay in the admin area.

What Is a UUID? Versions, v4 vs v7, and When to Use Them
Coding tips

What Is a UUID? Versions, v4 vs v7, and When to Use Them

A UUID (Universally Unique Identifier) is a 128-bit value used to label records, files, sessions and API objects so they stay distinct across machines without a central ID server.

October 18, 2026 · 12 min read · 2 views

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