Strange to me that a blob intensive service (storage) would do a greenfield implementation of an RPC framework using protobuf, which is pretty bad at encoding b

Strange to me that a blob intensive service (storage) would do a greenfield implementation of an RPC framework using protobuf, which is pretty bad at encoding blobs efficiently (and trashes a lot of memory). I'd expect such an endeavor to pick something like Google's Flatbuffers, Apache Arrow or something similar. Although to be fair, I'm also guilty of having far more experience with protobuf than other formats.