I've seen both your FoundationDB talks, curious if you are using FoundationDB under the hood or how much of the metadata store is homegrown? Also, how did you

I've seen both your FoundationDB talks, curious if you are using FoundationDB under the hood or how much of the metadata store is homegrown? Also, how did you implement the parsing of the Kafka protocol? From scratch or pieced together with open source Go bits? Having a nice programmable API for building Kafka-compatible servers could be a huge boon to the Kafka community (wink wink).