projection-patterns

by wshobson41k

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.

Install

The skill file stays in the publisher's repository.

Paste the copied command in a terminal. It installs this SKILL.md into that agent.

npx skills add wshobson/agents --skill projection-patterns -a cursor -y

Download skill plugins/backend-development/skills/projection-patterns/SKILL.md on GitHub

Related skills

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Questions

How do I install projection-patterns?: Download plugins/backend-development/skills/projection-patterns/SKILL.md from the publisher, or copy the path and open the repository. PlugMCP lists the skill and does not host the file.
Where does projection-patterns live?: The publisher keeps it at https://github.com/wshobson/agents.
Which agents can use projection-patterns?: Claude, Cursor, and Codex can read a SKILL.md you add from the publisher's repository.

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.

Projection Patterns

Comprehensive guide to building projections and read models for event-sourced systems.

When to Use This Skill

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

Type	Description	Use Case
Live	Real-time from subscription	Current state queries
Catchup	Process historical events	Rebuilding read models
Persistent	Stores checkpoint	Resume after restart
Inline	Same transaction as write	Strong consistency

projection-patterns

Install

Related skills

Questions

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.

Projection Patterns

When to Use This Skill

Core Concepts

1. Projection Architecture

2. Projection Types

Templates and detailed worked examples

Best Practices

Do's

Don'ts