I’d like to share a success story of FoundationDB at SkuVault, where it is used as a multi-model database for event sourcing, queues, docs and metadata: blog post with more details.
FoundationDB is running in production on Azure cloud for more than a year. Despite all the network glitches and reboots, it is the most reliable component in the distributed system. System administrators particularly love FDB - unlike the other databases, it never requires any babysitting or time-consuming maintenance.
If you have any questions, please don’t hesitate to ask!