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name: cqrs-implementation description: Implement Command Query Responsibility Segregation for scalable architectures. Use when separating read and write models, optimizing query performance, or building event-sourced systems. tags: [architecture, cqrs]

CQRS Implementation

Comprehensive guide to implementing CQRS (Command Query Responsibility Segregation) patterns.

Use this skill when

• Separating read and write concerns
• Scaling reads independently from writes
• Building event-sourced systems
• Optimizing complex query scenarios
• Different read/write data models are needed
• High-performance reporting is required

Do not use this skill when

• The domain is simple and CRUD is sufficient
• You cannot operate separate read/write models
• Strong immediate consistency is required everywhere

Instructions

• Identify read/write workloads and consistency needs.
• Define command and query models with clear boundaries.
• Implement read model projections and synchronization.
• Validate performance, recovery, and failure modes.

Resources

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