Akka: actor model implementation

reference - https://doc.akka.io/docs/akka/current/typed/actors.html

elements play into:

• client: sends messages to the task queue to process a task
• task queue: is the mailbox, is storing the messages in the queue
• actor: is reading the mailbox queue, to process the messsages for doing some tasks

In order to do it loose coupling, - the client runs in a thread or process - the queue runs in a thread or process - every actor runs in a single thread or process

In this way:

• when the client is sending a message to the queue, the communication can be async. The client doesn't need to block waiting the response or can wait to the ack and keep on working.
• the same for the queue, is not blocking any process,
• when the actor is reading the process is independent on the client process, so the whole process itself is so fast.