projection-patterns
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.
Best use case
projection-patterns is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
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.
Teams using projection-patterns should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/projection-patterns/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How projection-patterns Compares
| Feature / Agent | projection-patterns | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
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.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# 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.
Related Skills
projections
Build or query TES projections (current state views). State is derived from TES events - projections are the queryable current truth.
gliderecord-patterns
This skill should be used when the user asks to "query records", "GlideRecord", "database query", "get records", "update records", "insert record", "delete record", or any ServiceNow database operations.
GitOps Patterns
ArgoCD ApplicationSets, progressive delivery, Harness GitX, and multi-cluster GitOps patterns
aria-patterns
Provides ARIA roles, states, and properties for interactive components. Use when building custom widgets, fixing screen reader issues, or implementing modals, tabs, accordions, menus, or dialogs accessibly.
analyze-patterns
Use this skill when you need to analyze code for design patterns, anti-patterns, naming conventions, and code duplication. This skill excels at identifying architectural patterns, detecting code smells, and ensuring consistency across the codebase.
acc-stability-patterns-knowledge
Stability Patterns knowledge base. Provides patterns, antipatterns, and PHP-specific guidelines for Circuit Breaker, Retry, Rate Limiter, Bulkhead, and resilience audits.
a2a-patterns
Agent-to-Agent (A2A) protocol implementation patterns for Google ADK - exposing agents via A2A, consuming external agents, multi-agent communication, and protocol configuration. Use when building multi-agent systems, implementing A2A protocol, exposing agents as services, consuming remote agents, configuring agent cards, or when user mentions A2A, agent-to-agent, multi-agent collaboration, remote agents, or agent orchestration.
wcag-audit-patterns
Conduct WCAG 2.2 accessibility audits with automated testing, manual verification, and remediation guidance. Use when auditing websites for accessibility, fixing WCAG violations, or implementing ac...
testing-patterns
Testing patterns using bun:test with in-memory SQLite. Use when writing unit tests, integration tests, or router tests.
midnight-dapp:testing-patterns
Use when writing unit tests for Midnight contract interaction code, integration testing without ZK proofs, E2E testing with Playwright or Cypress, or setting up CI/CD pipelines for Midnight DApps.
e2e-testing-patterns
Master end-to-end testing with Playwright and Cypress to build reliable test suites that catch bugs, improve confidence, and enable fast deployment. Use when implementing E2E tests, debugging flaky tests, or establishing testing standards.
code-review-patterns
Internal skill. Use cc10x-router for all development tasks.