backend-development

Original：🇺🇸 English

Translated

Production backend systems development. Stack: Node.js/TypeScript, Python, Go, Rust | NestJS, FastAPI, Django, Express | PostgreSQL, MongoDB, Redis. Capabilities: REST/GraphQL/gRPC APIs, OAuth 2.1/JWT auth, OWASP security, microservices, caching, load balancing, Docker/K8s deployment. Actions: design, build, implement, secure, optimize, deploy, test APIs and services. Keywords: API design, REST, GraphQL, gRPC, authentication, OAuth, JWT, RBAC, database, PostgreSQL, MongoDB, Redis, caching, microservices, Docker, Kubernetes, CI/CD, OWASP, security, performance, scalability, NestJS, FastAPI, Express, middleware, rate limiting. Use when: designing APIs, implementing auth/authz, optimizing queries, building microservices, securing endpoints, deploying containers, setting up CI/CD.

10installs

Sourcesamhvw8/dotfiles

Added on2026-02-07

NPX Install

npx skill4agent add samhvw8/dotfiles backend-development

SKILL.md Content

View Translation Comparison →

Backend Development Skill

Production-ready backend development with modern technologies, best practices, and proven patterns.

When to Use

Designing RESTful, GraphQL, or gRPC APIs
Building authentication/authorization systems
Optimizing database queries and schemas
Implementing caching and performance optimization
OWASP Top 10 security mitigation
Designing scalable microservices
Testing strategies (unit, integration, E2E)
CI/CD pipelines and deployment
Monitoring and debugging production systems

Technology Selection Guide

Languages: Node.js/TypeScript (full-stack), Python (data/ML), Go (concurrency), Rust (performance) Frameworks: NestJS, FastAPI, Django, Express, Gin Databases: PostgreSQL (ACID), MongoDB (flexible schema), Redis (caching) APIs: REST (simple), GraphQL (flexible), gRPC (performance)

See:

references/backend-technologies.md

for detailed comparisons

Reference Navigation

Core Technologies:

```
backend-technologies.md
```
- Languages, frameworks, databases, message queues, ORMs
```
backend-api-design.md
```
- REST, GraphQL, gRPC patterns and best practices

Security & Authentication:

```
backend-security.md
```
- OWASP Top 10 2025, security best practices, input validation
```
backend-authentication.md
```
- OAuth 2.1, JWT, RBAC, MFA, session management

Performance & Architecture:

```
backend-performance.md
```
- Caching, query optimization, load balancing, scaling
```
backend-architecture.md
```
- Microservices, event-driven, CQRS, saga patterns

Quality & Operations:

```
backend-testing.md
```
- Testing strategies, frameworks, tools, CI/CD testing
```
backend-code-quality.md
```
- SOLID principles, design patterns, clean code
```
backend-devops.md
```
- Docker, Kubernetes, deployment strategies, monitoring
```
backend-debugging.md
```
- Debugging strategies, profiling, logging, production debugging
```
backend-mindset.md
```
- Problem-solving, architectural thinking, collaboration

Key Best Practices (2025)

Security: Argon2id passwords, parameterized queries (98% SQL injection reduction), OAuth 2.1 + PKCE, rate limiting, security headers

Performance: Redis caching (90% DB load reduction), database indexing (30% I/O reduction), CDN (50%+ latency cut), connection pooling

Testing: 70-20-10 pyramid (unit-integration-E2E), Vitest 50% faster than Jest, contract testing for microservices, 83% migrations fail without tests

DevOps: Blue-green/canary deployments, feature flags (90% fewer failures), Kubernetes 84% adoption, Prometheus/Grafana monitoring, OpenTelemetry tracing

Quick Decision Matrix

Need	Choose
Fast development	Node.js + NestJS
Data/ML integration	Python + FastAPI
High concurrency	Go + Gin
Max performance	Rust + Axum
ACID transactions	PostgreSQL
Flexible schema	MongoDB
Caching	Redis
Internal services	gRPC
Public APIs	GraphQL/REST
Real-time events	Kafka

Implementation Checklist

API: Choose style → Design schema → Validate input → Add auth → Rate limiting → Documentation → Error handling

Database: Choose DB → Design schema → Create indexes → Connection pooling → Migration strategy → Backup/restore → Test performance

Security: OWASP Top 10 → Parameterized queries → OAuth 2.1 + JWT → Security headers → Rate limiting → Input validation → Argon2id passwords

Testing: Unit 70% → Integration 20% → E2E 10% → Load tests → Migration tests → Contract tests (microservices)

Deployment: Docker → CI/CD → Blue-green/canary → Feature flags → Monitoring → Logging → Health checks

Resources

OWASP Top 10: https://owasp.org/www-project-top-ten/
OAuth 2.1: https://oauth.net/2.1/
OpenTelemetry: https://opentelemetry.io/