Redis CLI is a valuable tool for developers to get familiar with the Redis module. It has two modes: interactive mode (REPL) and command mode. While building Redis from source can provide the CLI, it's not necessary or practical for everyone, especially those on Windows or in constrained environments. A Node.js implementation of Redis CLI, created by Lu Jiajing, offers a solution that mimics the Antirez-provided CLI without requiring the full Redis installation. This implementation allows users to install Redis CLI as a development dependency in their package.json file, making it easily accessible to team members.