What is the Backend Patterns skill?

This skill teaches fundamental backend design patterns used in modern web development. It includes interactive examples and code snippets to help users implement patterns like MVC, Repository, Factory, Singleton, Observer, and more.

What are the key features of the Backend Patterns skill?

Interactive code examples in Python and JavaScript, Real-world use cases, Quizzes to test understanding, Best practices and anti-patterns.

What are the prerequisites for the Backend Patterns skill?

Basic knowledge of Python or JavaScript, Familiarity with web development basics.

How do you use the Backend Patterns skill?

1. Invoke the skill with: `/skill backend-patterns` 2. Follow the guided lessons 3. Practice with provided exercises.

Which design patterns does the Backend Patterns skill support?

MVC, Repository, Factory, Singleton, Observer, Strategy.

OpenClaw skill

backend-patterns

An OpenClaw skill that helps developers identify, explain, and implement common backend design patterns. Supported patterns include Repository Pattern, Unit of Work Pattern, CQRS, Mediator Pattern, Domain Driven Design Aggregates, Event Sourcing, and Saga Pattern. Users provide a description of their backend architecture or a code snippet to receive suggestions.

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How this skill works

The skill analyzes provided source code to identify common backend development patterns
It uses Tree-sitter to parse the code into an Abstract Syntax Tree (AST)
Predefined rules are applied to the AST to match structural patterns
Detected patterns are classified into categories like MVC, Repository, Service Layer
Outputs a list of patterns with names, descriptions, and code evidence

When to use it

When recommending patterns for data access in backend applications
When generating code for service layers separating business logic
When implementing CQRS for separating read and write operations
When applying event sourcing in backend event-driven architectures
When structuring backend code with MVC pattern
When using repository pattern to abstract data persistence

Best practices

Install dependencies with `npm install` before running the skill
Set `DATABASE_URL` environment variable for database connection
Set `REDIS_URL` environment variable for caching
Never commit secrets or environment variables to Git
Use `.env` file for local configuration management
Test backend endpoints locally before deployment

Example use cases

Implementing Repository Pattern: Uses the repository pattern to abstract the data layer from business logic in backend applications.
Service Layer Separation: Applies service layer pattern to encapsulate business logic separate from controllers.
Dependency Injection Configuration: Configures dependency injection for loose coupling between backend components.
Middleware Pattern for Authentication: Implements middleware pattern for handling authentication in API requests.

FAQs

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