MongoDB on Family Search

[mdantasf]

Hello guys,

Does the FamilySearch system continue to use MongoDB as its data persistence system?

Att,
Dantas

[sbradshaw]

I don't have inside information, but I was able to find a few things online:

According to this thread in 2016, FamilySearch evaluated MongoDB, but decided to go with Apache Cassandra:
https://groups.google.com/g/rootsdev/c/vHArpTD-dW4

Here's a post on the FamilySearch blog in 2016 that also mentions Cassandra:
https://www.familysearch.org/en/blog/familysearch-working-to-avoid-success-disaster

It appears they use DataStax to help manage their database:
https://www.datastax.com/enterprise-success/familysearch/discovering-family-ancestry-with-the-help-of-dse

Here's a presentation from a FamilySearch employee on the DataStax YouTube channel in 2019 that goes into more detail:
https://www.youtube.com/watch?v=XnpKLdrB2kI

It's possible they use both MongoDB and Cassandra, from this job listing – but I can't find the date when it was posted:
https://www.linkedin.com/jobs/view/familysearch-data-extraction-team-engineering-manager-us-based-remote-optional-at-the-church-of-jesus-christ-of-latter-day-saints-3637583002/