diff --git a/IV. Spring Boot features/29.5. Elasticsearch.md b/IV. Spring Boot features/29.5. Elasticsearch.md
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+### 29.5. Elasticsearch
+
+[Elastic Search](http://www.elasticsearch.org/)是一个开源的，分布式，实时搜索和分析引擎。Spring Boot为Elasticsearch及[Spring Data Elasticsearch](https://github.com/spring-projects/spring-data-elasticsearch)提供的基于它的抽象提供了基本的配置。Spring Boot提供了一个用于聚集依赖的`spring-boot-starter-data-elasticsearch`'Starter POM'。