Book Image

Mastering RethinkDB

By : Shaikh
Book Image

Mastering RethinkDB

By: Shaikh

Overview of this book

RethinkDB has a lot of cool things to be excited about: ReQL (its readable,highly-functional syntax), cluster management, primitives for 21st century applications, and change-feeds. This book starts with a brief overview of the RethinkDB architecture and data modeling, and coverage of the advanced ReQL queries to work with JSON documents. Then, you will quickly jump to implementing these concepts in real-world scenarios, by building real-time applications on polling, data synchronization, share market, and the geospatial domain using RethinkDB and Node.js. You will also see how to tweak RethinkDB's capabilities to ensure faster data processing by exploring the sharding and replication techniques in depth. Then, we will take you through the more advanced administration tasks as well as show you the various deployment techniques using PaaS, Docker, and Compose. By the time you have finished reading this book, you would have taken your knowledge of RethinkDB to the next level, and will be able to use the concepts in RethinkDB to develop efficient, real-time applications with ease.
Table of Contents (11 chapters)

Embedding ReQL in a programming language


RethinkDB provides client drivers for various programming languages. To explain, I am going to consider Node.js, and the steps are as follows:

  1. You can start the ReQL exploration journey by connecting to the database.

  2. Install the RethinkDB client module and make sure you have the RethinkDB server ready and running, listening to the default port.

  3. Make sure you have done npm install rethinkdb before running the following code:

          var rethinkdb = require('rethinkdb'); 
          var connection = null; 
          rethinkdb.connect({host : 'localhost', port :
                             28015},function(err,conn) { 
          if(err) {  
          throw new Error('Connection error');  
           } else { 
          connection = conn; 
           } 
           }); 
    

The preceding simple code snippet written in Node.js is importing the rethinkdb module and connecting to the RethinkDB server on the default port. It returns the callback function...