[mhalle]

It would be interesting to use lite3 for blob storage in or with sqlite.

[weitendorf]

That's kind of similar to my project collector: https://github.com/accretional/collector

It's protobuf/grpc based but uses json for serialization to make use of sqlite's json filtering functionality. However, it cannot be said to be zero-copy. It serializes binary protos into json and stores the binary protos directly for fast access, which allows you to skip deserialization when pulling out query results