When Youtube refers to Vitess as being RPC-based, they are not referring to Sun RPC (callrpc), but rather to the generic design pattern of exposing service call

When Youtube refers to Vitess as being RPC-based, they are not referring to Sun RPC (callrpc), but rather to the generic design pattern of exposing service calls over the network. In particular, Vitess makes services callable [-] using either BSON or JSON serialisation over HTTP CONNECT calls. [-] http://code.google.com/p/vitess/source/browse/go/rpcwrap/ http://code.google.com/p/vitess/source/browse/go/rpcwrap/