In the course, we will implement the subscription and publishing of the message. Before starting this course, you might as well learn the basic Redis course. Learn the basic ways to use Redis and try to operate it first. Redis (Remote Dictionary Server) is a key-value storage system written by Salvatore Sanfilippo. Usually, Redis is called a data structure server because value can be string, map, list, sets and sorted sets. It has a high performance, fast speed of reading and writing, and abu