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Ready to take your MongoDB skills to the next level? 🚀 While basic indexes are great, specialized indexes are what truly power high-performance, real-world applications. In this essential 2025 guide, we dive deep into the three most important index types you need to know: Compound, Unique, and Text Indexes.
This tutorial is perfect for developers who need to enforce data integrity, optimize complex search queries, or speed up multi-field filtering. We provide the exact syntax for each and explain the "rules of the road" to avoid common pitfalls.
What you will learn in this video:
Compound Indexes: Why index one field when you can index three? 📊
Learn the syntax: db.collection.createIndex({ field1: 1, field2: -1 }).
Understand the Prefix Rule: Why an index on { a, b, c } also speeds up queries on just { a } or { a, b }.
Mastering the ESR Rule (Equality, Sort, Range) for maximum efficiency.
Unique Indexes: Enforce data integrity at the database level! 🛡️
How to prevent duplicate emails or usernames using { unique: true }.
Creating Unique Compound Indexes to ensure a specific combination of fields (like firstName + lastName) is never repeated.
Handling "Missing Fields": Learn why MongoDB treats a missing field as null and how it affects uniqueness.
Text Indexes: Power your own search engine! 🔍
Syntax: db.collection.createIndex({ content: "text" }).
How to perform full-text searches using the $text and $search operators.
Weights & Wildcards: Assigning importance to
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2025/12/19
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