Book Image

Mastering MongoDB 7.0 - Fourth Edition

By : Marko Aleksendrić, Arek Borucki, Leandro Domingues, Malak Abu Hammad, Elie Hannouch, Rajesh Nair, Rachelle Palmer
Book Image

Mastering MongoDB 7.0 - Fourth Edition

By: Marko Aleksendrić, Arek Borucki, Leandro Domingues, Malak Abu Hammad, Elie Hannouch, Rajesh Nair, Rachelle Palmer

Overview of this book

Mastering MongoDB 7.0 explores the latest version of MongoDB, an exceptional NoSQL database solution that aligns with the needs of modern web applications. This book starts with an informative overview of MongoDB’s architecture and developer tools, guiding you through the process of connecting to databases seamlessly. This MongoDB book explores advanced queries in detail, including aggregation pipelines and multi-document ACID transactions. It delves into the capabilities of the MongoDB Atlas developer data platform and the latest features, such as Atlas Vector Search, and their role in AI applications, enabling developers to build applications with the scalability and performance that today’s organizations need. It also covers the creation of resilient search functionality using MongoDB Atlas Search. Mastering MongoDB 7.0’s deep coverage of advanced techniques encompasses everything from role-based access control (RBAC) to user management, auditing practices, and encryption across data, network, and storage layers. By the end of this book, you’ll have developed the skills necessary to create efficient, secure, and high-performing applications using MongoDB. You’ll have the confidence to undertake complex queries, integrate robust applications, and ensure data security to overcome modern data challenges.
Table of Contents (20 chapters)
4
Chapter 4: Connecting to MongoDB

Basic aggregation operators

At this point, you should be familiar with the basic MongoDB stages used for querying ($match, $limit, $search, $sample, $skip, $sort, etc.), mutating ($fill, $project, $set, $unset, and others), summarizing ($group, $count, etc.), joining, and performing input/output operations on documents.

For a quick refresher, the MongoDB documentation provides an excellent starting point: https://www.mongodb.com/docs/v7.0/reference/operator/aggregation/.

Bitwise operators in aggregation

One of the new features in MongoDB 7.0 is the introduction of bitwise operators in aggregations. Bitwise operators are especially useful in cases where documents have a lot of bit-mask values (such as status, permission settings, or general settings).

There are four operators that allow developers to create aggregations based on bit-mask values:

  • $bitAnd: Returns the result of a bitwise and operation on an array of integers or long values
  • $bitOr: Returns the result...