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.