backend-patterns

Design scalable backend APIs with repository-service separation and validation.

Updated May 14, 2026
One-click install
npx skills add https://github.com/WUIX69/e-lock --skill backend-patterns-wuix69
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: backend-patterns
Source: https://github.com/WUIX69/e-lock/tree/main/.agent/.agents/skills/backend-patterns
Command: npx skills add https://github.com/WUIX69/e-lock --skill backend-patterns-wuix69

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps you design backend systems that are easier to scale, safer to change, and simpler to operate by applying proven patterns for APIs, data access, auth, caching, and error handling.

Core Features & Use Cases

  • API Design Guidance: Structure REST or Next.js API routes with clear resource boundaries and predictable request handling.
  • Data Layer Patterns: Separate repositories and services to improve maintainability, testing, and database performance.
  • Operational Best Practices: Add validation, caching, rate limiting, logging, retry logic, and background processing where they are needed.
  • Use Case: A team building an admin dashboard can use this Skill to shape endpoints, reduce database bottlenecks, and standardize how errors and permissions are handled.

Quick Start

Use backend-patterns to review my backend architecture and propose a clean API, data, and authentication structure for my current project.

Frequently Asked Questions about backend-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I structure scalable backend APIs with Node.js and Express?

Structure scalable backend APIs by applying repository-service separation to isolate data access from business logic, improving maintainability and database optimization for Node.js and Express projects. This pattern ensures predictable request handling and clear resource boundaries.

What is repository-service separation in backend architecture?

Repository-service separation is a data layer pattern that divides data access operations from business logic. It improves testing, maintainability, and database performance by keeping repositories focused on queries and services handling validation and workflow rules.

Can I use this backend pattern with Next.js API routes?

Yes, these backend patterns work with Next.js API routes. They help structure endpoints with clear resource boundaries while integrating validation, authentication, caching, and rate limiting directly into your Next.js server-side workflows.

How do I add authentication and rate limiting to my server-side workflows?

Add authentication and rate limiting to server-side workflows by applying operational best practices that validate requests, secure endpoints, and control traffic. This standardizes error handling and authorization across your backend architecture.

What's the best way to handle background jobs and database optimization in Node.js?

Handle background jobs and database optimization in Node.js by implementing resilient production patterns like retry logic and background processing alongside repository layers. This reduces database bottlenecks and ensures maintainable data access.

When do I need caching and logging in my backend API design?

You need caching and logging in backend API design when building resilient production systems. These operational best practices improve performance, monitor request handling, and support error handling within your server-side workflows.