The CQRS Architectural Pattern
Scenario & Real-Life Problem
Scenario: You have a system (say, a large eCommerce or financial application) with high read volume (users frequently querying product listings, analytics, dashboards) but also complex writes (domain logic for orders, payments, user states). Keeping them in a single domain model or single DB schema can lead to:
- Very complex read queries that mix with domain logic.
- Performance bottlenecks on the same model if it must handle both heavy reads and complicated writes.
- Difficulty scaling: you may want to tune data for fast reads, but that conflicts with an optimal write structure. …
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This is an online wiki about the main topics over the last 40 years of software design, architecture & testing. It was created by Khalil Stemmler.
This wiki's mission is to help eliminate the unknown unknowns, helping you get up to speed on the best practices and principles to write testable, flexible, and maintainable code.
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