Do you have experience working with Elasticsearch for data search and analytics?

Yes, I have experience working with Elasticsearch for data search and analytics. Elasticsearch is a distributed search engine based on Lucene, which allows efficient indexing and full-text search over large volumes of data.

I have used Elasticsearch for:

• Fast log and metric searches
• User activity analytics
• Creating dashboards with aggregations

In Java, I typically use the official Elasticsearch REST High Level Client, which allows creating queries, indexing documents, and performing aggregations.

Example of a search query for documents by the "user" field:

SearchRequest searchRequest = new SearchRequest("index_name");
SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
sourceBuilder.query(QueryBuilders.matchQuery("user", "kimchy"));
searchRequest.source(sourceBuilder);
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);

This approach helps quickly retrieve the needed data and build real-time analytics.