All about OpenSearch (or ElasticSearch)

• Analysis
• Inverted Indices
• Index Mappings
• Inspecting the cluster
• object field type
• Array of objects and nested field type
• Autocomplete functionality

APIs

• Index APIs
• Document APIs
• Search

Code

I have written multiple implementations of a dummy e-commerce search service using Java and Spring Boot:

• product-search-v1 : using Spring Data Elasticsearch
• product-search-v2 : using OpenSearch Java high-level REST client
• product-search-v3 : using OpenSearch Java high-level REST client and Search Templates
• product-search-v4 : using OpenSearch Java client

product-search-service is a stand-alone project which I use for trying out new things.

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