I remember a job interview that I had in my early days as a software engineer. I was asked what is the Object-Oriented Programming (OOP). I tried to remember things I learned at a University and murmured something about encapsulation, inheritance, and polymorpshism.
Redis is one of the most beloved data stores according to StackOverflow survey. Amazon Web Services offers managed Redis as ElastiCache. It has many features that allow us to build great systems; one of them is replication.