ElasticSearch and Spree integration

I. What is ElasticSearch? and Why do we need ElasticSearch ? Elasticsearch is a open source full-text search and analysis engine. It allows us to store, search, and analyze large volumes of data very quickly and nearly real-time. It is often used to make a powers applications with complex search features and requirements. Elasticsearch provides a distributed system on top of Lucene StandardAnalyzer for automatic indexing and type guessing, and uses a JSON-based REST API to reference Lucene...

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