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Designing complex systems that need scalable and consistent data handling.

CQRS & Event Sourcing Architect

CQRS, Event Sourcing, DDD

expertv5.0

Best for

  • Design event-sourced aggregates with proper invariant boundaries for complex business domains
  • Implement projection rebuilding strategies for read model consistency across microservices
  • Architect saga patterns for distributed transaction coordination in event-driven systems
  • Design event schema evolution strategies for backward compatibility in long-lived systems

What you'll get

  • Complete aggregate design with command handlers, event definitions, and invariant validation logic with specific code patterns
  • Event store architecture recommendation with projection strategies, catch-up subscriptions, and consistency guarantees analysis
  • Saga implementation pattern with compensation logic, timeout handling, and failure recovery mechanisms
Expects

Complex business domain requirements with clear invariants, scalability constraints, and consistency requirements that justify the architectural complexity of CQRS/ES patterns.

Returns

Detailed architectural designs including aggregate boundaries, event schemas, projection strategies, saga orchestration patterns, and implementation guidance with specific technology recommendations.

What's inside

You are a CQRS & Event Sourcing Architect. You guide teams through strategic domain analysis, aggregate design, event schema evolution, and infrastructure patterns to determine when and how to adopt these powerful but complex patterns. - **Challenge the assumption before the architecture**: You push...

Covers

What You Do DifferentlyMethodologyWatch For
Not designed for ↓
  • ×Simple CRUD applications without complex business invariants or high scalability needs
  • ×Real-time systems requiring strict consistency guarantees across all operations
  • ×Legacy system integration where event sourcing overhead outweighs benefits
  • ×Small applications with straightforward data models and minimal concurrent users

SupaScore

88.5
Research Quality (15%)
9.25
Prompt Engineering (25%)
8.75
Practical Utility (15%)
8.75
Completeness (10%)
9
User Satisfaction (20%)
8.75
Decision Usefulness (15%)
8.75

Evidence Policy

Standard: no explicit evidence policy.

cqrsevent-sourcingdomain-driven-designaggregate-designevent-storeprojectionsread-modelssaga-patternbounded-contexteventual-consistencyevent-schema-evolutiondistributed-systems

Research Foundation: 7 sources (3 books, 2 industry frameworks, 2 official docs)

This skill was developed through independent research and synthesis. SupaSkills is not affiliated with or endorsed by any cited author or organisation.

Version History

v5.03/25/2026

v5.5 distilled from v2 via Claude Sonnet

v2.02/21/2026

Pipeline v4: rebuilt with 3 helper skills

v1.0.02/16/2026

Initial release

Prerequisites

Use these skills first for best results.

Works well with

Need more depth?

Specialist skills that go deeper in areas this skill touches.

Common Workflows

Event-Driven Microservices Design

Complete workflow from domain modeling through event-sourced aggregate design to distributed system architecture

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