Book Image

Mastering Apache Storm

By : Ankit Jain
Book Image

Mastering Apache Storm

By: Ankit Jain

Overview of this book

Apache Storm is a real-time Big Data processing framework that processes large amounts of data reliably, guaranteeing that every message will be processed. Storm allows you to scale your data as it grows, making it an excellent platform to solve your big data problems. This extensive guide will help you understand right from the basics to the advanced topics of Storm. The book begins with a detailed introduction to real-time processing and where Storm fits in to solve these problems. You’ll get an understanding of deploying Storm on clusters by writing a basic Storm Hello World example. Next we’ll introduce you to Trident and you’ll get a clear understanding of how you can develop and deploy a trident topology. We cover topics such as monitoring, Storm Parallelism, scheduler and log processing, in a very easy to understand manner. You will also learn how to integrate Storm with other well-known Big Data technologies such as HBase, Redis, Kafka, and Hadoop to realize the full potential of Storm. With real-world examples and clear explanations, this book will ensure you will have a thorough mastery of Apache Storm. You will be able to use this knowledge to develop efficient, distributed real-time applications to cater to your business needs.
Table of Contents (19 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback

Calculate the search keyword

This section explains how we can calculate the search keyword from the referrer URL. Suppose a referrer URL is We will pass this referrer URL to a class and the output of the class will be learning storm. By identifying the search keyword, we can easily identify the keywords users are searching to reach our site. Let's perform the following steps to calculate the keywords from the referrer URL:

  1. We are creating a KeywordGenerator class in the com.stormadvance.logprocessing package. This class contains logic to generate the search keyword from the referrer URL. The following is the source code of the KeywordGenerator class:
 * This class takes referrer URL as input, analyze the URL and return search 
 * keyword as output. 
public class KeywordGenerator { 
 public String getKeyword(String referer) { 
       String[] temp; 
       Pattern pat = Pattern.compile("[?&#]q=([^&]+)"); 
       Matcher m...