Can you explain the main differences between REST and gRPC in implementation and usage?

REST and gRPC are two different approaches to organizing interaction between services.

REST:

• Based on HTTP architecture and uses standard methods (GET, POST, PUT, DELETE).
• Data transfer is usually in JSON or XML format.
• Easy to implement and widely supported.
• Well suited for public APIs and browser interactions.

gRPC:

• Uses HTTP/2 protocol and binary data transfer format (Protocol Buffers).
• Supports bidirectional streaming of data.
• Provides high performance and lower network load.
• Requires code generation based on service descriptions (proto files).

Using REST is simpler and more universal, while gRPC is more efficient for microservices and systems with high performance and scalability requirements.