Chapter 6 - Concurrency

Question 1

What is Concurrency?

Answer 1

Concurrency is when the execution of two or more pieces of code act as if they run at the same time. It is a software mechanism.

Question 2

What is parallelism?

Answer 2

Parallelism is when the execution of two or more pieces of code do run at the same time. It’s hardware concern.

Question 3

What is temporal coupling?

Answer 3

Temporal Coupling happens when your code imposes a sequence on things that is not required to solve a problem at hand.

Question 4

What is an atomic operation?

Answer 4

It is a set of commands that should be synchronously executed. In other words, it should not switch execution context.

Question 5

What is the most challenging part of Concurrency?

Answer 5

The most challenging part of concurrency is handling shared state.
Concurrency in a shared resource environment is difficult, and managing it yourself is fraught with challenges.

Question 6

What are some alternatives to Concurrency with Shared State?

Answer 6

1 - Actor and Processes

2 - Messaging System / Blackboard