Knowledge Base

Tutorials

Using Aggregation and Regex in MongoDB to Reduce Data in a Collection

Learn how to use regex to transform an external data set to JSON or export it to CSV for later import, and run aggregation queries to reduce the data before creating a MongoDB collection.

Posted on: 19/06/2018 (last updated: 04/08/2021) • Phil Factor • 9 minutes

Find slow queries in MongoDB with Query Profiler

Learn about the Query Profiler and the MongoDB Database Profiler: how you can collect profiling data to investigate and optimize query performance in MongoDB.

Posted on: 19/06/2018 (last updated: 17/01/2024) • Kirsty Burgess • 16 minutes

A Practical Introduction to MongoDB Views

We introduce the idea of MongoDB views – what they are, why they’re useful, when to use them, and how they relate to data aggregations – and walk you through how to create a view in Studio 3T using a small practice database courtesy of the UK’s Met Office.

Posted on: 30/04/2018 (last updated: 04/08/2021) • Phil Factor • 10 minutes