Concurrency and Parallelism

The important of multithreading and concurrency able to skillfully navigate the complexity.

Concurrency：Multi-thread

#### - Multithreading is a technique that allows for concurrent (simultaneous) execution of two or more parts of a program for maximum utilization of a CPU. As a really basic example, multithreading allows you to write code in one program and listen to music in another. Programs are made up of processes and threads.

Parallelism：Load balancing