How is data exchanged between microservices?

Data exchange between microservices is usually carried out via network protocols and interaction standards. Main methods include:

• HTTP/REST API: The most common way, where microservices exchange data in JSON or XML format over HTTP.
• gRPC: A high-performance protocol using Protocol Buffers, suitable for internal communication.
• Messaging through brokers: Using message queue systems (RabbitMQ, Kafka) for asynchronous data exchange.

Example of a REST request between microservices in Python using requests:

import requests
response = requests.get('http://service-b/api/data')
data = response.json()

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