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> ElasticSearch is serving as a primary data store, there is no backing in a database because ES is just that good.

And you've been running this application in production how long?

I agree that using Elasticsearch as a primary data store seems risky. The situation is improving though; the v1 release introduces easy backups (for example, to s3) which from my experience work very well.

Prior to this backing up was a messy process.

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