---
title: "Discussion on \"Unraveling MongoDB's Mystique: Decoding the Auto-generated _id\" | Hashnode"
description: "Discussion on \"Unraveling MongoDB's Mystique: Decoding the Auto-generated _id\". If you've ever worked with MongoDB, you're likely acquainted with the _id field, which MongoDB auto-generates if an ID isn't provided explicitly. Now, let's delve into the structure of this auto-generated _id in MongoDB.\nThe _id is a 12-byte hexadeci..."
url: "https://hashnode.com/posts/unraveling-mongodbs-mystique-decoding-the-auto-generated-id/65e46056d777a2e55068cece"
---

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# [Unraveling MongoDB's Mystique: Decoding the Auto-generated \_id](https://abhinav3254.hashnode.dev/unraveling-mongodbs-mystique-decoding-the-auto-generated-id?utm_source=hashnode&utm_medium=feed)

If you've ever worked with MongoDB, you're likely acquainted with the \_id field, which MongoDB auto-generates if an ID isn't provided explicitly. Now, let's delve into the structure of this auto-generated \_id in MongoDB. The \_id is a 12-byte hexadeci...

Mar 3, 2024 · 1 min read · abhinav3254.hashnode.dev  
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