This document discusses best practices for running Redis in a multi-tenant environment. It covers architectural considerations like high availability, security and isolation techniques using ACLs and SSL, and the importance of monitoring and understanding your environment. The key opportunities are that failover is easy to implement, changes can be introduced smoothly, and the architecture is reusable. Challenges include managing global sentinels and Redis drivers. Case studies demonstrate issues like customer spikes causing problems and the importance of monitoring.