Do you have experience designing asynchronous interactions via REST?

Asynchronous interaction via REST is usually implemented using patterns that allow the client not to block while waiting for a response from the server. For example:

• The client sends a request to perform an operation (POST), and the server immediately returns an acknowledgment of task acceptance (202 Accepted) along with a unique task identifier.
• The client periodically polls the server using this identifier to check the status of the operation.
• Alternatively, the server can use Webhook or WebSocket to notify the client upon completion.

This approach enables handling long-running operations without timeouts and blocking.

In designing such systems, it is important to:

• Define an API for creating tasks and retrieving their status.
• Handle possible task states (queued, in progress, completed, error).
• Ensure idempotency and proper handling of repeated requests.

Example:

1. Client sends POST /tasks with parameters.
2. Server responds with 202 and returns taskId.
3. Client checks progress with GET /tasks/{taskId}/status.

This pattern is often used in systems with long computations or integrations.