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Mastering MongoDB 7.0

Mastering MongoDB 7.0

By : Marko Aleksendrić, Arek Borucki, Leandro Domingues, Malak Abu Hammad, Elie Hannouch, Rajesh Nair, Rachelle Palmer
5 (12)
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Mastering MongoDB 7.0

Mastering MongoDB 7.0

5 (12)
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)
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4
Chapter 4: Connecting to MongoDB

Monitoring memory usage in WiredTiger

WiredTiger is MongoDB's default storage engine, known for its efficiency and scalability. When you initiate MongoDB with WiredTiger, it establishes an internal memory cache. How sizable is this cache? By default, it's roughly half of the RAM you have, minus 1 GB. Therefore, if you have 16 GB RAM the internal cache is set to about 7.5 GB. But that's not all the memory MongoDB uses. It also sets aside some memory for tasks such as handling connections and sorting data. MongoDB also takes advantage of any extra memory your system has to further improve its performance.

If you want to check or change the WiredTiger cache settings, you can use the MongoDB Shell. Using the parameter storage.wiredTiger.engineConfig.cacheSizeGB, lets you adjust the cache size.

Note

It's usually best to stick with the default cache size. But if your data is highly compressed, you may consider reducing the cache, say by 10-20% to free up some...

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