Book Image

Learning Azure Cosmos DB

By : Shahid Shaikh
Book Image

Learning Azure Cosmos DB

By: Shahid Shaikh

Overview of this book

<p>Microsoft has introduced a new globally distributed database, called Azure Cosmos DB. It is a superset of Microsoft's existing NoSQL Document DB service. Azure Cosmos DB enables you to scale throughput and storage elastically and independently across any number of Azure's geographic regions.</p> <p>This book is a must-have for anyone who wants to get introduced to the world of Cosmos DB. This book will focus on building globally-distributed applications without the hassle of complex, multiple datacenter configurations. This book will shed light on how Cosmos DB offers multimodal NoSQL database capabilities in the cloud at a scale that is one product with different database engines, such as key-value, document, graph, and wide column store. We will cover detailed practical examples on how to create a CRUD application using Cosmos DB with a frontend framework of your choice. This book will empower developers to choose their favorite database engines to perform integration, along with other systems that utilize the most popular languages, such as Node.js. This book will take you through the tips and trick, of Cosmos DB deployment, management, and the security offered by Azure Cosmos DB in order to detect, prevent, and respond to database breaches.</p> <p>By the end of this book, you will not only be aware of the best capabilities of relational and non-relational databases, but you will also be able to build scalable, globally distributed,<br />and highly responsive applications.</p>
Table of Contents (14 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

Integrating the Table API with Node.js


Azure table storage is a key-value-based NoSQL database with high performance. In order to integrate it with Node.js, we need to install the required module. Microsoft has provided official node modules to use the Table API (https://www.npmjs.com/package/azure-storage):

  1. First, create the Table API in Azure portal and copy the connection string. Export it as the environment variable. In a Linux-based system, you can run this command to export a connection string as an environment variable:
export.AZURE_STORAGE_CONNECTION_STRING = <Your connection string>
  1. Next, install the required dependency. Here is the command:
npm install azure-storage
  1. Once it is installed, you can include the module in your code base and start using the Table storage, for example:
var azure = require('azure-storage'); 
var tableObject = azure.createTableService(); 
tableObject.createTableIfNotExists('demoTable', function(error, result, response){ 
  if(!error){ 
    // Table exists...