In the last 15 years of its evolution, Redis has adapted to and helped shape three major computing paradigms: client-server architecture, distributed systems, and serverless computing. Initially created as a caching layer in 2009, Redis evolved into a comprehensive data platform that addressed key challenges in each era. From solving client-server bottlenecks to enabling AI apps, Redis consistently offered elegant solutions to pressing needs of each technological age. Its evolution demonstrates how a simple idea can become a powerful tool for developers worldwide, making the impossible routine and improving development experiences.