What is the purpose of elastic search?

Related questions

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2. What is Elasticsearch and how it works?
3. For what purpose query DSL is used in Elasticsearch?
4. What is the function of search?
5. What query language does Elasticsearch use?
6. Why Elasticsearch is so fast?
7. What are term based search queries?
8. What is constant score in Elasticsearch?
9. How is Elasticsearch data stored?
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Tags

1. #elasticsearch
2. #completer
3. #found
4. #classical
5. #search
6. #elastic
7. #checker
8. #please
9. #purpose
10. #known
11. #different
12. #cloud
13. #general
14. #cases
15. #store
16. #analytics
17. #alerting
18. #document
19. #engine
20. #spell