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

Using Kibana, Logstash, and Beats

In the last chapter, we introduced Python programming with Elasticsearch, and presented the low-level client and high-level library. We wrote a number of unit test programs and tried to implement Bollinger Bands with the high-level library. However, due to the fact that the moving_fn aggregation is not yet supported, we used a constant value for the moving standard deviation instead. If you cannot find the support function from the high-level client, you need to switch back to the low-level client. In this chapter, we will give an overview of the Elastic Stack's components, including Kibana, Logstash, and Beats. The Elastic Stack is a rich ecosystem. Knowing one piece of it is good. Two pieces are better, and three pieces are excellent. If we understand most of the components, our role could be as a fullstack engineer, and even an architect...