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.

• If detailed patterns are required, open resources/implementation-playbook.md .

Resources

• resources/implementation-playbook.md for detailed CQRS patterns and templates.