What API integration schemes/types do you know? Name the two main ones.

Two main schemes of API integration:

1. Synchronous integration — the client sends a request and waits for a response from the server in real time. Example: REST API, where the client receives data immediately after the request.

2. Asynchronous integration — message exchange occurs without waiting for an immediate response, often through message queues or events. Example: using RabbitMQ or Kafka for data transfer between systems.

These schemes are chosen depending on the response time requirements and the reliability of data transmission.