What methods are used to implement communication between microservices when transmitting requests?

Communication between microservices when passing requests is usually implemented using the following methods:

• HTTP/REST — the most common way, where microservices exchange data via HTTP requests using JSON or XML formats.
• gRPC — a high-performance remote procedure call protocol that uses Protocol Buffers for serialization.
• Messages through brokers — for example, RabbitMQ, Kafka, where microservices exchange asynchronous messages.
• WebSocket — for bidirectional real-time communication.

The choice of method depends on the requirements for performance, reliability, and system architecture.