Preface

Welcome to the fifth edition of Elasticsearch Cookbook targeting Elasticsearch 8.x. It's a long journey (about 12 years) that I have been on with both Elasticsearch and readers of my books. Every version of Elasticsearch brings breaking changes and new functionalities, and the evolution of already present components is a continuous cycle of product and marketing evolution.

Elasticsearch, once a very niche product, is now one of the most used databases in the world (ranked seventh in April 2022 – source: https://db-engines.com/en/ranking), and both the on-premises (bare metal, Docker, or K8S) and multi-cloud markets provided by Elastic on Amazon, Azure, and Google will rank it as one of the next best solutions for cloud searching and ...

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