InferProtobuf infers the schema from a protobuf file dynamically in case the schema file changed.

InitRegistry initialize the registry, only called once by the server.

SchemaPartialImport compare the schema to be installed and the one in database if not exist in database, install; if existed, ignore.

Registry is a global registry for schemas It stores the schema ids and the ref to its file content in memory The schema definition is stored in the file system and will only be loaded once used.