Build read models and projections from event streams. Use when implementing CQRS read sides, building materialized views, or optimizing query performance in event-sourced systems.
Installs into .claude/skills of the current project.
Are you the author of Projection Patterns?
Add the live security badge to your README. It updates with every re-scan.
[](https://www.skillsdirectory.com/skills/benjaminastera-projection-patterns)
---
name: projection-patterns
description: "Build read models and projections from event streams. Use when implementing CQRS read sides, building materialized views, or optimizing query performance in event-sourced systems."
risk: unknown
source: community
---
# Projection Patterns
Comprehensive guide to building projections and read models for event-sourced systems.
## Use this skill when
- Building CQRS read models
- Creating materialized views from events
- Optimizing query performance
- Implementing real-time dashboards
- Building search indexes from events
- Aggregating data across streams
## Do not use this skill when
- The task is unrelated to projection patterns
- You need a different domain or tool outside this scope
## Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
- If detailed examples are required, open `resources/implementation-playbook.md`.
## Resources
- `resources/implementation-playbook.md` for detailed patterns and examples.
