The NoSQL revolution began in 2006 with Google BigTable, addressing the limitations of relational databases in handling internet-scale applications. Modern applications require scalable, flexible, and highly available databases, leading to the rise of NoSQL solutions like MongoDB and Couchbase. While MongoDB was an early player, it faced challenges in scalability, flexibility, and availability, leading some businesses to switch to Couchbase, which offers better scale-out capabilities, flexibility, and high availability through automatic sharding, global secondary indexes, and efficient failover mechanisms. Viber, a global messaging platform, transitioned to Couchbase from MongoDB to accommodate its growing data needs, highlighting Couchbase's ability to handle significantly higher operations per second. The text advocates for Couchbase's superiority in handling scale and uptime and encourages further exploration through a whitepaper.