mongodb

Optimize MongoDB queries and indexes using explain("executionStats").

Updated Feb 26, 2026
One-click install
npx skills add https://github.com/gagan114662/exp --skill mongodb-gagan114662
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mongodb
Source: https://github.com/gagan114662/exp/tree/main/crates/openfang-skills/bundled/mongodb
Command: npx skills add https://github.com/gagan114662/exp --skill mongodb-gagan114662

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps users efficiently manage and interact with MongoDB databases by providing expertise in schema design, query writing, performance optimization, and aggregation pipelines.

Core Features & Use Cases

  • Schema Design: Guidance on embedding vs. referencing, and patterns like Subset and Bucket.
  • Query Optimization: Best practices for writing efficient queries and using indexes.
  • Aggregation Framework: Building complex data processing pipelines.
  • Performance Tuning: Using explain() and index analysis for speed.
  • Use Case: Optimize a slow-running MongoDB query by designing and applying the correct compound index.

Quick Start

Use the mongodb skill to create an index on the 'email' field for the 'users' collection.

Frequently Asked Questions about mongodb

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I optimize a slow MongoDB query using indexes?

To optimize a slow MongoDB query, you should analyze it using `explain("executionStats")` to identify performance bottlenecks, then design and apply the correct compound index to speed up data retrieval.

What is the best way to design a MongoDB schema for my data?

MongoDB schema design involves choosing between embedding and referencing based on your data access patterns, and utilizing patterns like Subset and Bucket to structure your documents efficiently.

How do I build complex data processing pipelines in MongoDB?

You can build complex data processing pipelines in MongoDB by using the Aggregation Framework, which allows you to process records through multiple stages to transform and combine data for analysis.

Can I validate my MongoDB schema to ensure data integrity?

Yes, you can validate your MongoDB schema to ensure data integrity. The skill provides guidance on schema validation rules to enforce structure and maintain efficient data management best practices.

Why does my MongoDB query ignore the index I created?

Your MongoDB query might ignore an index if it is not designed correctly. You can use query analysis with `explain()` to check execution stats and ensure your indexes align with your query patterns.