Book Image

MongoDB 4 Quick Start Guide

By : Doug Bierer

Book Image

MongoDB 4 Quick Start Guide

By: Doug Bierer

Overview of this book

MongoDB has grown to become the de facto NoSQL database with millions of users, from small start-ups to Fortune 500 companies. It can solve problems that are considered difficult, if not impossible, for aging RDBMS technologies. Written for version 4 of MongoDB, this book is the easiest way to get started with MongoDB. You will start by getting a MongoDB installation up and running in a safe and secure manner. You will learn how to perform mission-critical create, read, update, and delete operations, and set up database security. You will also learn about advanced features of MongoDB such as the aggregation pipeline, replication, and sharding. You will learn how to build a simple web application that uses MongoDB to respond to AJAX queries, and see how to make use of the MongoDB programming language driver for PHP. The examples incorporate new features available in MongoDB version 4 where appropriate.

Preface

Who this book is for

What this book covers

To get the most out of this book

Free Chapter

Introducing MongoDB

Introducing MongoDB

Overview of MongoDB

Installing MongoDB

Installing MongoDB on Linux

Understanding MongoDB Data Structures

Understanding MongoDB Data Structures

Documents, collections, and database

Data-modeling considerations

Creating a MongoDB database and collection

Using the MongoDB Shell

Using the MongoDB Shell

Performing simple queries

Database and collection operations

Creating, updating, or deleting documents

Creating and running shell scripts

Developing with Program Language Drivers

Developing with Program Language Drivers

Overview of the MongoDB PHP driver

Installing the MongoDB PHP extension

Performing CRUD operations using PHPLIB

Other libraries and framework integration

Building Complex Queries Using Aggregation

Building Complex Queries Using Aggregation

An overview of aggregation

Using single-purpose aggregation

Using the aggregation pipeline

Using map-reduce

Using the MongoDB Compass aggregation pipeline builder

Maintaining MongoDB Performance

Maintaining MongoDB Performance

Simple backup and restore

Securing MongoDB

Securing MongoDB

MongoDB security overview

Transport Layer Security

Getting from a Web Form to MongoDB

Getting from a Web Form to MongoDB

Building the application

Configuring transaction support

Adding security

Using Docker

Using MongoDB with Docker

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Replication

Command summary:

rs.initiate( { _id: "<replicaSetName>", members: [ { _id: N, host: "<host>" } ] )
rs.add( "<hostname>" | { host: "<hostname>" } )
rs.remove( "<hostname>")
rs.conf()
rs.status()

The purpose of replication is to provide immediate online redundancy so that there is no loss of service in case of failure. Before we get into the mechanics of how to create and use replicas, it's important to gain an understanding of what MongoDB replication is and how it operates.

Here are a couple of related topics which are beyond the scope of this book, but which might be of interest:
Change streams (https://docs.mongodb.com/manual/changeStreams/#change-streams) allows applications to subscribe to real-time changes in the data by using a Publish-Subscribe design.
Arbiters (https://docs...