In an effort to transition to Redis Cluster for certain workloads, Merge outlines a detailed setup process using Docker, highlighting the differences between Redis Classic and Redis Cluster, such as the ability for horizontal scaling and support for multiple writers and replicas. The guide provides step-by-step instructions for configuring Redis Cluster nodes, emphasizing the importance of a configuration script that facilitates node communication without the need for hard-coded IP addresses. It also describes the use of the `getent` command to determine IP addresses within Docker containers, which is crucial for creating a cluster. The article underscores the necessity of understanding various systems to achieve optimal configurations, drawing parallels to previous experiences with Celery and Kubernetes.