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Before diving into the code, ensure your Elasticsearch server is running. Open a terminal and execute the elasticsearch command to start the server. Understanding the Two REST Client Types Elasticsearch provides two distinct REST client implementations: High-Level REST Client (RestHighLevelClient): This wrapper handles serialization and deseria ...

Introduction Feign simplifies REST client development by abstracting away the underlying HTTP communication details. Instead of manually constructing URLs, handling parameter concatenation, and managing HTTP requests, Feign allows developers to define service calls as simple interface methods that resemble Spring MVC controller endpoints. This ...