Sample Users Demo

CLI demo that runs a series of queries against a database, creates indexes, shows the explain output and provides context for what is happening and why. It uses the MongoDB Node.js driver and vanilla EJS modules.

Purpose

This was created as a way for me to wrap my head around compound indexes and see how the order of fields within a compound index has an impact on query performance.

Usage

1. Run yarn to install deps
2. Add your connection string (local or Atlas) to .env.example and rename it to .env
3. Run yarn seed to populate the database
4. Run yarn start to start the demo