export couchbase data to mongodb

[George Xie]

Hi,
We have a running couchbase cluster. We would like to export all data in the couchbase to a Mongodb database. What's the fastest way?

thanks
George

[Asya Kamsky]

This is a tricky question - it's not a matter of fastest export - the question is do you need to restructure the data during the export/import?

If you didn't, then you could use some sort of a tool to dump out JSON documents from Couchbase and load them into MongoDB using 'mongoimport' - unfortunately I don't see any evidence that there is a tool to dump out json from Couchbase.

Since you might want to re-consider your schema anyway (since you're basically moving from key-value structure to document structure where you can index various secondary fields directly) it might make sense to write a light weight script which pulls data from one, applies whatever transformations you need to make and inserts them into the other.

Asya

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