Book Image

Practical MongoDB Aggregations

By : Paul Done
Book Image

Practical MongoDB Aggregations

By: Paul Done

Overview of this book

Officially endorsed by MongoDB, Inc., Practical MongoDB Aggregations helps you unlock the full potential of the MongoDB aggregation framework, including the latest features of MongoDB 7.0. This book provides practical, easy-to-digest principles and approaches for increasing your effectiveness in developing aggregation pipelines, supported by examples for building pipelines to solve complex data manipulation and analytical tasks. This book is customized for developers, architects, data analysts, data engineers, and data scientists with some familiarity with the aggregation framework. It begins by explaining the framework's architecture and then shows you how to build pipelines optimized for productivity and scale. Given the critical role arrays play in MongoDB's document model, the book delves into best practices for optimally manipulating arrays. The latter part of the book equips you with examples to solve common data processing challenges so you can apply the lessons you've learned to practical situations. By the end of this MongoDB book, you’ll have learned how to utilize the MongoDB aggregation framework to streamline your data analysis and manipulation processes effectively.
Table of Contents (20 chapters)
2
Part 1: Guiding Tips and Principles
7
Part 2: Aggregations by Example
16
Afterword

Sharding implications for pipelines

MongoDB sharding isn't just an effective way to scale out your database to hold more data and support higher transactional throughput. Sharding also helps you scale out your analytical workloads, potentially enabling aggregations to be completed far quicker. Depending on the nature of your aggregation and some adherence to best practices, the cluster may execute parts of the aggregation in parallel over multiple shards for faster completion.

There is no difference between a replica set and a sharded cluster regarding the functional capabilities of the aggregations you build, except for a minimal set of constraints. The sharded aggregation constraints section in this chapter will outline these constraints. When it comes to optimizing your aggregations, in most cases, there will be little to no difference in the structure of a pipeline when refactoring for performance on a sharded cluster compared to a simple replica set.

You should always...