Integrating Elasticsearch with Spring Boot for Full CRUD Operations

This guide walks through integrating Spring Data Elasticsearch into a Spring Boot application, covering entity mapping annotations, repository creation, service layer implementation, and unit tests to perform create, read, update, delete, and fuzzy search operations on Elasticsearch indices.

CRUDElasticsearchJava

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Integrating Elasticsearch with Spring Boot for Full CRUD Operations

JD Retail Technology

Aug 11, 2023 · Backend Development

Why Spring Data Elasticsearch Triggers Full GC Alerts: Uncovering Class Metadata Leaks

A June 15 Full GC alert in a Spring Data Elasticsearch service led to a deep investigation using jstat, jmap, VisualVM, and OQL, revealing massive class loading from ES PO packages caused by per‑request ElasticsearchRestTemplate instances, which exhausted metaspace and triggered repeated garbage collections.

FullGCJVMMetaspace Leak

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Why Spring Data Elasticsearch Triggers Full GC Alerts: Uncovering Class Metadata Leaks