kafka概念:https://www.processon.com/view/link/5fc8df867d9c0837c09a0cd2生产端:https://www.processon.com/view/link/5f87744c07912906db271efd
broker端:https://www.processon.com/view/link/5f93d5c71e085307a0a1826a
consumer端:https://www.processon.com/view/link/5f9bae6107912907289bfdff