Book Image

Advanced Elasticsearch 7.0

By : Wai Tak Wong
Book Image

Advanced Elasticsearch 7.0

By: Wai Tak Wong

Overview of this book

Building enterprise-grade distributed applications and executing systematic search operations call for a strong understanding of Elasticsearch and expertise in using its core APIs and latest features. This book will help you master the advanced functionalities of Elasticsearch and understand how you can develop a sophisticated, real-time search engine confidently. In addition to this, you'll also learn to run machine learning jobs in Elasticsearch to speed up routine tasks. You'll get started by learning to use Elasticsearch features on Hadoop and Spark and make search results faster, thereby improving the speed of query results and enhancing the customer experience. You'll then get up to speed with performing analytics by building a metrics pipeline, defining queries, and using Kibana for intuitive visualizations that help provide decision-makers with better insights. The book will later guide you through using Logstash with examples to collect, parse, and enrich logs before indexing them in Elasticsearch. By the end of this book, you will have comprehensive knowledge of advanced topics such as Apache Spark support, machine learning using Elasticsearch and scikit-learn, and real-time analytics, along with the expertise you need to increase business productivity, perform analytics, and get the very best out of Elasticsearch.
Table of Contents (25 chapters)
Free Chapter
1
Section 1: Fundamentals and Core APIs
8
Section 2: Data Modeling, Aggregations Framework, Pipeline, and Data Analytics
13
Section 3: Programming with the Elasticsearch Client
16
Section 4: Elastic Stack
20
Section 5: Advanced Features

Modeling Your Data in the Real World

In the previous chapter, we have discussed different aspects of search APIs. We started from using a simple URI search and request body search. We investigated the Query DSL to learn how to write high-quality queries. We practiced troubleshooting techniques with the Profile API, the Validate API, the Explain API, and completion suggested and completed a detailed example of search-as-you-type feature. Since we know how to search now, we need to step back and think about the design of data modeling. In this chapter, we will discuss data modeling when using Elasticsearch.

Elasticsearch is a distributed, document-oriented NoSQL database for storing, retrieving, and managing document-oriented or semi-structured data. Basically, a document is stored with minimal support for relationships between documents. This chapter focuses on some of most common...