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Mastering RethinkDB

Mastering RethinkDB

By : Shaikh
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Mastering RethinkDB

Mastering RethinkDB

1 (1)
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)
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Socket.io integration for message broadcasting


Here is the code that will perform the RethinkDB changefeed operation and event broadcasting:

var rethinkdb = require('rethinkdb'); 
var db = require('./db'); 
var pollObject = new db(); 
module.exports = function(socket) { 
  pollObject.connectToDb(function(err,connection) { 
  if(err) { 
    return callback(true,"Error connecting to database"); 
  } 
  // Look over this line carefully. 
  // we are invoking changes() function on poll table. 
  // On every change it will give us data. 
  rethinkdb.table('poll').changes().run(connection,function(err,cursor) { 
    if(err) { 
      console.log(err); 
    } 
    // We are scrolling over the cursor data and broadcasting the changes using socket. 
    cursor.each(function(err,row) { 
      console.log(JSON.stringify(row)); 
      if(Object.keys(row).length > 0) { 
        socket.broadcast.emit("changeFeed...
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Mastering RethinkDB
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