> capnproto is a fantastic project, but considering google is built on top of grpc/protobufs, they will be around for effectively ever When choosing an RPC int

> capnproto is a fantastic project, but considering google is built on top of grpc/protobufs, they will be around for effectively ever When choosing an RPC interface, we went with gRPC because of maturity and familiarity, not lifetime support specifically. Building RPC on Cap'n Proto is a bit more barebones: https://capnproto.org/rpc.html https://capnproto.org/rpc.html But the library support is getting there (converts a description into code at build): https://crates.io/crates/capnp-rpc https://crates.io/crates/capnp-rpc I look forward to trying out Cap'n Proto for RPC. But I also look forward to try Selium as a message system: https://selium.com/ https://selium.com/ Maybe in combination.