Implement Command Query Responsibility Segregation for scalable architectures. Use when separating read and write models, optimizing query performance, or building event-sourced systems.
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Use cqrs-implementation to design and implement CQRS boundaries, command/query models, and read-model projections for [domain/service], based on [read/write workloads] and [consistency requirements]; include recovery and failure-mode validation considerations.
Required inputs
[domain/service]
[read/write workloads]
[consistency requirements]
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SKILL.md
name: cqrs-implementationdescription: "Implement Command Query Responsibility Segregation for scalable architectures. Use when separating read and write models, optimizing query performance, or building event-sourced systems."risk: criticalsource: communitydate_added: "2026-02-27"
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.
Limitations
Use this skill only when the task clearly matches the scope described above.
Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
cqrs-implementation by sickn33 · The Skill Leaderboard