Elasticsearch

Elastic search is a distributed, RESTful search and analytics engine capable of solving a growing number of use cases. It centrally stores your data so you can discover the expected and uncover the unexpected. Elasticsearch is usually used as a supplement to another, primary database – with a strong focus on constraints, correctness and reliability, as well as transactionally updated. Accordingly, the data is first written to the main base, and then asynchronously – in Elasticsearch.