Rust and gRPC: A complete guide

gRPC is an open-source remote procedure call system developed by Google, designed to facilitate efficient data transfer across mobile, IoT devices, and backends, with features like load balancing, authentication, and bidirectional streaming over HTTP/2. It uses protocol buffers, a fast binary format, for data transmission and is implemented in 10 languages. In the Rust community, the tonic and grpc crates offer full implementations of gRPC, with tonic being production-ready and supporting async/await and TLS-based authentication. A demonstration of building a gRPC app using Rust showcases the creation of a server and client using protocol buffers, with tonic allowing for efficient communication over HTTP/2. While tonic is noted for its speed and reliability, grpc is still developing towards production readiness. Both implementations support request and response streaming, error handling, and load balancing, highlighting Rust's robust support for gRPC.