Ratnopam Chakrabarti, a software developer at Ericsson Inc., explores the integration of full-text search into applications using the Couchbase Java SDK. Focusing on IoT and smart city technologies, Chakrabarti details how this feature, part of Couchbase Server 4.5, enhances search capabilities by indexing and querying datasets, such as conference data, through various search methods including fuzzy, regular expression, prefix, phrase, range, and combination queries. The tutorial outlines the process of setting up a Couchbase environment within a Spring Boot application, creating search indices, and executing search operations using Java code. The post emphasizes the flexibility offered by Couchbase's full-text search service, suitable for diverse applications ranging from résumés to tweets, and provides a practical demonstration of its use in real-world scenarios.