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
Section 1: Fundamentals and Core APIs
Section 2: Data Modeling, Aggregations Framework, Pipeline, and Data Analytics
Section 3: Programming with the Elasticsearch Client
Section 4: Elastic Stack
Section 5: Advanced Features

Overview of Elasticsearch 7

Welcome to Advanced Elasticsearch 7.0. Elasticsearch quickly evolved from version 1.0.0, released in February 2014, to version 6.0.0 GA, released in November 2017. Nonetheless, we will use 7.0.0 release as the base of this book. Without making any assumptions about your knowledge of Elasticsearch, this opening chapter provides setup instructions with the Elasticsearch development environment. To help beginners complete some basic features within a few minutes, several steps are given to launch the new version of an Elasticsearch server. An architectural overview and some core concepts will help you to understand the workflow within Elasticsearch. It will help you straighten your learning path.

Keep in mind that you can learn the potential benefits by reading the API conventions section and becoming familiar with it. The section New features following this one is a list of new features you can explore in the new release. Because major changes are often introduced between major versions, you must check to see whether it breaks the compatibility and affects your application. Go through the Migration between versions section to find out how to minimize the impact on your upgrade project.

In this chapter, you'll learn about the following topics:

  • Preparing your environment
  • Running Elasticsearch
  • Talking to Elasticsearch
  • Elasticsearch architectural overview
  • Key concepts
  • API conventions
  • New features
  • Breaking changes
  • Migration between versions