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Mastering Elasticsearch 5.x

You're reading from   Mastering Elasticsearch 5.x Master the intricacies of Elasticsearch 5 and use it to create flexible and scalable search solutions

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Product type Paperback
Published in Feb 2017
Publisher Packt
ISBN-13 9781786460189
Length 428 pages
Edition 3rd Edition
Languages
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Author (1):
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Bharvi Dixit Bharvi Dixit
Author Profile Icon Bharvi Dixit
Bharvi Dixit
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Table of Contents (13) Chapters Close

Preface 1. Revisiting Elasticsearch and the Changes FREE CHAPTER 2. The Improved Query DSL 3. Beyond Full Text Search 4. Data Modeling and Analytics 5. Improving the User Search Experience 6. The Index Distribution Architecture 7. Low-Level Index Control 8. Elasticsearch Administration 9. Data Transformation and Federated Search 10. Improving Performance 11. Developing Elasticsearch Plugins 12. Introducing Elastic Stack 5.0

Chapter 3.  Beyond Full Text Search

In the previous chapter, we saw how scoring and relevancy work in a full text search. We also discussed the Elasticsearch Query DSL in detail and covered the important queries with their use cases. Finally, we talked about using query rewrites and using search templates along with the Mustache template engine. In this chapter, we will focus on topics which are more than just a full text search and we'll learn how to alter the default scoring of Apache Lucene using custom methods. We will also learn about scripting modules of Elasticsearch in detail. By the end of this chapter, we will have covered the following topics:

  • Controlling multimatching
  • Controlling the score using the function score query
  • Optimizing queries and score recalculation using the query rescore
  • Extended information regarding Elasticsearch scripting
  • The new scripting language: Painless
  • Understanding Lucene expressions
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