Book Image

ElasticSearch Cookbook

By : Alberto Paro
Book Image

ElasticSearch Cookbook

By: Alberto Paro

Overview of this book

ElasticSearch is one of the most promising NoSQL technologies available and is built to provide a scalable search solution with built-in support for near real-time search and multi-tenancy. This practical guide is a complete reference for using ElasticSearch and covers 360 degrees of the ElasticSearch ecosystem. We will get started by showing you how to choose the correct transport layer, communicate with the server, and create custom internal actions for boosting tailored needs. Starting with the basics of the ElasticSearch architecture and how to efficiently index, search, and execute analytics on it, you will learn how to extend ElasticSearch by scripting and monitoring its behaviour. Step-by-step, this book will help you to improve your ability to manage data in indexing with more tailored mappings, along with searching and executing analytics with facets. The topics explored in the book also cover how to integrate ElasticSearch with Python and Java applications. This comprehensive guide will allow you to master storing, searching, and analyzing data with ElasticSearch.
Table of Contents (19 chapters)
ElasticSearch Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Creating a native client


To create a native client to communicate with an ElasticSearch server, there are two ways:

  • Creating an embedded node (a node that doesn't contain data, but it works as arbiter) and getting the client from it. This node will appear in the cluster state nodes and it's able to use discovery capabilities of ElasticSearch to join the cluster (so no node address is required to connect to a cluster). This client is able to reduce the node routing due to knowledge of cluster topology.

  • Creating a transport client, which is a standard client that requires the address and port of nodes to connect.

In this recipe, we will see how to create these clients.

Getting ready

You need a working ElasticSearch cluster and a working copy of Maven.

The code of this recipe is in chapter_10/nativeclient in the code bundle of this book provided on Packt's website.

How to do it...

To create a native client, we will perform the steps given as follows:

  1. Before starting, we must be sure that Maven loads...