gRPC-java

Leverages HTTP/2 for multiplexed streams and header compression, enabling efficient bidirectional communication and reduced latency compared to HTTP/1.1, as highlighted in the README's feature list.

Uses Protocol Buffers as the default IDL for service contracts, ensuring compile-time type checking and efficient serialization, which minimizes runtime errors and boosts performance.

Supports multiple transports like Netty for general Java, OkHttp for Android, and in-process for testing, allowing platform-specific optimizations as detailed in the High-level Components section.

Separates Stub, Channel, and Transport layers, making it easy to add interceptors for cross-cutting concerns like logging and auth without modifying core service logic, per the README's architecture explanation.