This comprehensive guide dives deep into the functionalities of Elasticsearch 5, the widely-used search and analytics engine. Leveraging the power of Apache Lucene, this book will help you understand advanced concepts like querying, indexing, and cluster management to build efficient and scalable search solutions. What this Book will help me do Master advanced features of Elasticsearch such as text scoring, sharding, and aggregation. Understand how to handle big data efficiently using Elasticsearch's architecture. Learn practical implementation techniques for Elasticsearch features through hands-on examples. Develop custom plugins for Elasticsearch to tailor its functionalities to specific needs. Scale and optimize Elasticsearch clusters for high performance in production environments. Author(s) Bharvi Dixit is an experienced software engineer and a recognized expert in implementing Elasticsearch solutions. With a strong background in distributed systems and database management, Bharvi's writing is informed by real-world experience and a focus on practical applications. Who is it for? This book is ideal for developers and data engineers with existing experience in Elasticsearch who wish to deepen their knowledge. It serves as a valuable resource for professionals tasked with creating scalable search applications. A working understanding of Elasticsearch basics and query DSL is recommended to fully benefit from this guide.