RavenDB 4.1 FeaturesMongoDB & CosmosDB Migration Wizards
time to read 2 min | 345 words

After we built the SQL Migration Wizard for RavenDB 4.1, we started to field questions about assistance in migrating from more databases. As a result of this, we have introduced a support for MongoDB and CosmosDB migration.

I’m going to walk you through how this works. First, you’ll need to download the Release Candidate of RavenDB 4.1. In addition to the zip package, you’ll need to download the Tools zip file as well.

Next, run RavenDB and create a new database, then go to Settings > Import Data and select From other. Here is what this will look like:

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I went to shodan.io and found a publicly available MongoDB server to test this out. The process completed successfully and gave me a single document:

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I guess someone already got to this instance.

More seriously, I scanned literally the first page in this listing and was able to connect and retrieve real documents from a few of them. That included what looked like users (hashed) passwords, among other details. I deleted the data

At any rate, you can use this wizard to pull data from a MongoDB instance to your RavenDB database. RavenDB will handle all the details of the transfer for you. There is even the option to use a transformation script to shape the data as it goes into RavenDB.

You can do the same for CosmosDB, as you can see below:

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These credentials I got from doing a GitHub search.

On the one hand, I’m really happy that the feature works. On the other hand, I’m pretty much in a state of despair from the state of security in general.

We are looking into other databases that our users want to migrate from. If you have such a need, please let us know.

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