Book Image

Mastering Elasticsearch 5.x - Third Edition

By : Bharvi Dixit
Book Image

Mastering Elasticsearch 5.x - Third Edition

By: Bharvi Dixit

Overview of this book

Elasticsearch is a modern, fast, distributed, scalable, fault tolerant, and open source search and analytics engine. Elasticsearch leverages the capabilities of Apache Lucene, and provides a new level of control over how you can index and search even huge sets of data. This book will give you a brief recap of the basics and also introduce you to the new features of Elasticsearch 5. We will guide you through the intermediate and advanced functionalities of Elasticsearch, such as querying, indexing, searching, and modifying data. We’ll also explore advanced concepts, including aggregation, index control, sharding, replication, and clustering. We’ll show you the modules of monitoring and administration available in Elasticsearch, and will also cover backup and recovery. You will get an understanding of how you can scale your Elasticsearch cluster to contextualize it and improve its performance. We’ll also show you how you can create your own analysis plugin in Elasticsearch. By the end of the book, you will have all the knowledge necessary to master Elasticsearch and put it to efficient use.
Table of Contents (20 chapters)
Mastering Elasticsearch 5.x - Third Edition
About the Author
About the Reviewer
Customer Feedback


In this chapter, we started with the general problems of structuring data in Elasticsearch and the different approaches to data modeling. We have shown you how relational data can be managed using nested and parent-child data types. We further discussed the aggregation module of Elasticsearch for data analytics purposes, including the concept of instant aggregation introduced in Elasticsearch 5.0, along with all four categories of aggregations, that is, metric, bucket, pipeline, and the latest matrix aggregation available in Elasticsearch.

Our next chapter will focus on topics for improving the user search experience using suggesters, which allows you to correct user query spelling mistakes and build efficient autocomplete mechanisms. In addition to that, you'll see how to improve query relevance by using different queries and the Elasticsearch functionality. Finally, the chapter will cover how to use synonyms with Elasticsearch.