CQRS
CQRS (Command Query Responsibility Segregation) is a software architectural pattern that separates the operations for reading data (queries) from those for writing data (commands). It uses distinct models for these operations, often with separate data stores or schemas, to optimize performance, scalability, and maintainability. This pattern is commonly applied in complex, high-traffic systems where read and write workloads have different requirements.
Developers should learn and use CQRS when building applications with complex business logic, high concurrency, or disparate read and write performance needs, such as in e-commerce platforms, financial systems, or real-time analytics. It helps handle scalability by allowing independent scaling of read and write components and improves maintainability by decoupling concerns, though it adds complexity and is best suited for scenarios where these benefits outweigh the overhead.