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  • Book Overview & Buying MongoDB Cookbook - Second Edition
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MongoDB Cookbook - Second Edition

MongoDB Cookbook - Second Edition - Second Edition

By : Dasadia, Amol Nayak
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MongoDB Cookbook - Second Edition

MongoDB Cookbook - Second Edition

5 (2)
By: Dasadia, Amol Nayak

Overview of this book

MongoDB is a high-performance and feature-rich NoSQL database that forms the backbone of the systems that power many different organizations – it’s easy to see why it’s the most popular NoSQL database on the market. Packed with many features that have become essential for many different types of software professionals and incredibly easy to use, this cookbook contains many solutions to the everyday challenges of MongoDB, as well as guidance on effective techniques to extend your skills and capabilities. This book starts with how to initialize the server in three different modes with various configurations. You will then be introduced to programming language drivers in both Java and Python. A new feature in MongoDB 3 is that you can connect to a single node using Python, set to make MongoDB even more popular with anyone working with Python. You will then learn a range of further topics including advanced query operations, monitoring and backup using MMS, as well as some very useful administration recipes including SCRAM-SHA-1 Authentication. Beyond that, you will also find recipes on cloud deployment, including guidance on how to work with Docker containers alongside MongoDB, integrating the database with Hadoop, and tips for improving developer productivity. Created as both an accessible tutorial and an easy to use resource, on hand whenever you need to solve a problem, MongoDB Cookbook will help you handle everything from administration to automation with MongoDB more effectively than ever before.
Table of Contents (12 chapters)
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11
Index

Implementing server-side scripts


In this recipe, we will see how to write server stored JavaScript similar to stored procedures in relational databases. This is a common use case where other pieces of code require access to these common functions and we have them in one central place. To demonstrate server-side scripts, the function will simply add two numbers.

There are two parts to this recipe. First, we see how to load the scripts from the collections on the client-side JavaScript shell and secondly, we will see how to execute these functions on the server.

Note

The documentation specifically mentions that it is not recommended to use server-side scripts. Security is one concern though if the data is not properly audited and hence we need to be careful with what functions are defined. Since Mongo 2.4, the server-side JavaScript engine is V8, which can execute multiple threads in parallel as opposed to the engine prior to version 2.4 of Mongo, which executes only one thread at a time.

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