并发和并行的区别

并发：一个人同时吃三个馒头

并行：三个人同时吃三个馒头

参考文章

并发和并行的区别解释(1) CPU 看并发 CPU 看并行

go语言创始人解释：

Concurrency is about dealing with lots of things at once.
Parallelism is about doing lots of things at once.