What is the main role of queues in software systems?

The main role of queues in software systems is to organize the ordered processing of data or tasks based on the FIFO principle (first in, first out). Queues allow:

• Asynchronous task processing, relieving main threads.
• Smoothing out load peaks by distributing tasks over time.
• Ensuring reliable data transfer between components.
• Coordinating interactions between different parts of the system.

For example, in a web application, a queue can be used to send emails without delaying the user's response.