Book Image

Getting Started with RethinkDB

By : Gianluca Tiepolo
Book Image

Getting Started with RethinkDB

By: Gianluca Tiepolo

Overview of this book

RethinkDB is a high-performance document-oriented database with a unique set of features. This increasingly popular NoSQL database is used to develop real-time web applications and, together with Node.js, it can be used to easily deploy them to the cloud with very little difficulty. Getting Started with RethinkDB is designed to get you working with RethinkDB as quickly as possible. Starting with the installation and configuration process, you will learn how to start importing data into the database and run simple queries using the intuitive ReQL query language. After successfully running a few simple queries, you will be introduced to other topics such as clustering and sharding. You will get to know how to set up a cluster of RethinkDB nodes and spread database load across multiple machines. We will then move on to advanced queries and optimization techniques. You will discover how to work with RethinkDB from a Node.js environment and find out all about deployment techniques. Finally, we’ll finish by working on a fully-fledged example that uses the Node.js framework and advanced features such as Changefeeds to develop a real-time web application.
Table of Contents (15 chapters)
Getting Started with RethinkDB
Credits
About the Author
Acknowledgement
About the Reviewer
www.PacktPub.com
Preface
Index

Connecting to RethinkDB


Now that we have everything installed, it's time to start interacting with RethinkDB through Node.js. In the following examples, we'll be adding some fake data to a table in our RethinkDB cluster. We'll be running these commands on a server running Ubuntu Linux.

To start, let's look at how to connect to our RethinkDB instance. First, make sure that your database is up and running. If it's not running, you can start RethinkDB by executing the following command from a terminal window:

sudo /etc/init.d/rethinkdb start

This will start the database. Now, let's have a look at the code used to connect to our instance:

r.connect({host: 'localhost', port: 28015 }, function(err, conn) {
    //
});

As you can see, the RethinkDB module provides us with a connect function, which creates a new connection to the database. This function accepts a few parameters, such as the server host and port. Optionally, you can also specify the name of the database and an authentication key (more...