Book Image

Elasticsearch 8.x Cookbook - Fifth Edition

By : Alberto Paro
Book Image

Elasticsearch 8.x Cookbook - Fifth Edition

By: Alberto Paro

Overview of this book

Elasticsearch is a Lucene-based distributed search engine at the heart of the Elastic Stack that allows you to index and search unstructured content with petabytes of data. With this updated fifth edition, you'll cover comprehensive recipes relating to what's new in Elasticsearch 8.x and see how to create and run complex queries and analytics. The recipes will guide you through performing index mapping, aggregation, working with queries, and scripting using Elasticsearch. You'll focus on numerous solutions and quick techniques for performing both common and uncommon tasks such as deploying Elasticsearch nodes, using the ingest module, working with X-Pack, and creating different visualizations. As you advance, you'll learn how to manage various clusters, restore data, and install Kibana to monitor a cluster and extend it using a variety of plugins. Furthermore, you'll understand how to integrate your Java, Scala, Python, and big data applications such as Apache Spark and Pig with Elasticsearch and create efficient data applications powered by enhanced functionalities and custom plugins. By the end of this Elasticsearch cookbook, you'll have gained in-depth knowledge of implementing the Elasticsearch architecture and be able to manage, search, and store data efficiently and effectively using Elasticsearch.
Table of Contents (20 chapters)

Chapter 4: Exploring Search Capabilities

Now that we have set the mappings and put the data inside the indices, we can start exploring the search capabilities of Elasticsearch. In this chapter, we will cover how to search using different factors: sorting, highlighting, scrolling, suggesting, counting, and deleting. These actions are the core part of Elasticsearch; ultimately, everything in Elasticsearch is about serving the query and returning good-quality results.

This chapter is divided into two parts: the first part shows how to perform an API call-related search, and the second part will look at two special query operators that are the basis for building complex queries in the upcoming chapters.

In this chapter, we will cover the following recipes:

  • Executing a search
  • Sorting results
  • Highlighting results
  • Executing a scrolling query
  • Using the search_after functionality
  • Returning inner hits in results
  • Suggesting a correct query
  • Counting matched...