Description

Command Query Responsibility Segregation (CQRS) is an architectural pattern that separates reading and writing into two different models. Commands update data, and Queries read data.

Where to use

• High-traffic systems where reads vastly outnumber writes.
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• Complex domains where read/write models differ.

Real World Example

A social network details profile updates (Commands) to a Normalized SQL DB, while the Feed (Query) is read from a Denormalized NoSQL store for speed.

Code Example

class CQRS:
    def __init__(self):
        pass

    def execute(self):
        print('Executing CQRS')