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projection-patterns

Official

Build read models from event streams.

Software Engineering#database#read models#cqrs#event sourcing#projections#event-driven architecture
Author3commas-io
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This Skill provides a structured approach and reusable templates for building read models and projections from event streams, crucial for optimizing query performance and implementing CQRS read sides in event-sourced systems.

Core Features & Use Cases

  • Projection Architecture: Understand the flow from event store to read model.
  • Projection Types: Learn about live, catchup, persistent, and inline projections.
  • Reusable Templates: Implement basic projectors, order summaries, search indexes, aggregations, and multi-table projections.
  • Use Case: When building a CQRS read side, use this skill to create a OrderSummaryProjection that aggregates order events into a denormalized table for fast querying.

Quick Start

Use the projection-patterns skill to create a basic projector for order events.

Dependency Matrix

Required Modules

None required

Components

references

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: projection-patterns
Download link: https://github.com/3commas-io/commas-claude/archive/main.zip#projection-patterns

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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