What is Query?
A query is a request for data retrieval. It specifies the data needed and any conditions or filters to be applied. Queries are typically declarative, meaning they specify what data is desired without specifying how to retrieve it. In CQRS, queries are used to perform read operations on the data model.
Full Form of CQRS
CQRS stands for Command Query Responsibility Segregation. CQRS is a software architectural pattern that separates the operations that read data (queries) from the operations that modify data (commands) into different models.
- With CQRS, you have separate models for reads and writes, each optimized for its specific purpose.
- This separation allows you to scale and optimize each model independently, as they have different requirements.
- For example, the read model can be optimized for fast and efficient queries, while the write model can focus on ensuring data consistency and integrity.