CODEWITHSUNDEEP
elasticsearch
jibs
jibs

Reputation: 120

Internal data storage mechanism of elasticsearch

I have been working with elasticsearch for the past 2 months. I have used both REST approach and API support in different languages to index, get and search data. I also read a lot about elasticsearch and found out it is not a good option to use it as a data store. Why is this? And I'm also curious about how elasticsearch internally stores the indexed data. Any good link or explanation??

Upvotes: 3

Views: 3650

Answers (1)

John Petrone
John Petrone

Reputation: 27515

Elastic Search is built on top of Apache Lucene - here's a reference doc on the Lucene index file structure:

http://lucene.apache.org/core/4_7_2/core/org/apache/lucene/codecs/lucene46/package-summary.html#package_description

Regarding whether or not it's a good option as a data store I think that's more individual opinion and specific use cases than a fact that can be proved. It does not have the transaction support that something like MySQL does if that's what you are looking for. In that case it's somewhat on a par with other NoSQL solutions. This is a pretty decent writeup on the trade-offs and issues: https://www.found.no/foundation/elasticsearch-as-nosql/

In the end it depends on what you are doing with your data and what level of robustness you require.

Upvotes: 5

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