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.
Table of Contents (11 chapters)

Configuring transaction support

In addition to getting a MongoDB\Driver\Session instance and supplying it as an argument to the insert() and update() methods, we must also provide the appropriate configuration. In the demonstration application, json.php and add.php both pulled connection parameters from a file called Application/init.php. The basic configuration for a simple MongoDB database with no security is as follows:

In order to provide support for transactions, we must run the operation on a MongoDB replica set member. The revised configuration file, Application\init.php, would appear as follows:

Our Application\Connection::buildUri() method will then create the following MongoDB connection string:

mongodb://192.168.2.107:27017/sweetscomplete?replicaSet=sweets_11

We must also add to the MongoDB config file and ensure that the MongoDB instance is a member of the replica...