Database: Why did NoSQL emerge when SQL already existed?
Recently, I had the opportunity to participate in the development and construction of a large-scale product, designed to serve hundreds of thousands, even millions, of users daily. As a result, the core architecture was built on the CQRS Pattern, a model that separates data reading and writing operations. This approach has allowed us to optimize the system’s performance and scalability while minimizing risks when handling large volumes of data. Through these experiences, I’ve been able to answer a question that has puzzled me for a long time: ‘Why did NoSQL emerge when SQL already existed?...