Key Characteristics of Search-DBs Title Remarks Based on Apache Lucene Search-DBs are based on Apache Lucene - a text-search engine. Used for derived data Search-DBs don't provide 100% durability, hence it should be used for derived data and not as primary source of truth. General use-cases Read more Tokenizer Read more Inverted Index Read more Indices containing documents Indices is like tables, documents like rows in Search-DBs. Various Search-DBs Service Elastic Search Open Search Apache Solr MongoDB Atlas Search New Relic - Logs Analysis Reference How does elasticsearch store data? What are the top alternatives to Elasticsearch, and how do they compare?