gRPC has become the de facto standard for microservices communication. Developed by Google, it uses Protocol Buffers for binary serialization and HTTP/2 for transport, delivering superior performance compared to REST.
Advantages of gRPC
Protobuf binary serialization is up to 8x faster than JSON, with messages 30-70% smaller. The .proto contract serves as living documentation and enables client generation in multiple languages (Go, TypeScript, Python, Rust, Java, etc.).
gRPC supports four communication types: unary, server streaming, client streaming, and bidirectional streaming for real-time channels.
gRPC in the Node.js ecosystem
The @grpc/grpc-js library is the native TypeScript implementation. With tools like ts-proto, you can auto-generate TypeScript types from your .proto files. NestJS offers native gRPC integration using familiar decorators.
Production considerations
gRPC requires careful handling of load balancing (especially with HTTP/2), timeouts, retries, and circuit breakers. Tools like Envoy or gRPC-Web expose gRPC services to web clients.
For microservice architectures where performance matters, gRPC is the most solid choice. At Vynta, we design and deploy gRPC service meshes for growing enterprises.