Backend Development Skill
🛠️ MCP Tools Available:
- Context7 / Tavily / BraveSearch / Serper.dev: Prefer for documentation and search; fall back to WebSearch or WebFetch only if needed.
- Sequential Thinking: Break down complex problems into structured reasoning steps
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, ORMsbackend-api-design.md - REST, GraphQL, gRPC patterns and best practices
Security & Authentication:
backend-security.md - OWASP Top 10 2025, security best practices, input validationbackend-authentication.md - OAuth 2.1, JWT, RBAC, MFA, session management
Performance & Architecture:
backend-performance.md - Caching, query optimization, load balancing, scalingbackend-architecture.md - Microservices, event-driven, CQRS, saga patterns
Quality & Operations:
backend-testing.md - Testing strategies, frameworks, tools, CI/CD testingbackend-code-quality.md - SOLID principles, design patterns, clean codebackend-devops.md - Docker, Kubernetes, deployment strategies, monitoringbackend-debugging.md - Debugging strategies, profiling, logging, production debuggingbackend-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:
- OAuth 2.1:
- OpenTelemetry:
1---2name: backend-development-33description: Build robust backend systems with modern technologies (Node.js, Python, Go, Rust), frameworks (NestJS, FastAPI, Django), databases (PostgreSQL, MongoDB, Redis), APIs (REST, GraphQL, gRPC), authentication (OAuth 2.1, JWT), testing strategies, security best practices (OWASP Top 10), performance optimization, scalability patterns (microservices, caching, sharding), DevOps practices (Docker, Kubernetes, CI/CD), and monitoring. Use when designing APIs, implementing authentication, optimizing database queries, setting up CI/CD pipelines, handling security vulnerabilities, building microservices, or developing production-ready backend systems.4---56# Backend Development Skill78> **🛠️ MCP Tools Available**: 9> - **Context7 / Tavily / BraveSearch / Serper.dev**: Prefer for documentation and search; fall back to **WebSearch** or **WebFetch** only if needed.10> - **Sequential Thinking**: Break down complex problems into structured reasoning steps1112Production-ready backend development with modern technologies, best practices, and proven patterns.1314## When to Use1516- Designing RESTful, GraphQL, or gRPC APIs17- Building authentication/authorization systems18- Optimizing database queries and schemas19- Implementing caching and performance optimization20- OWASP Top 10 security mitigation21- Designing scalable microservices22- Testing strategies (unit, integration, E2E)23- CI/CD pipelines and deployment24- Monitoring and debugging production systems2526## Technology Selection Guide2728**Languages:** Node.js/TypeScript (full-stack), Python (data/ML), Go (concurrency), Rust (performance)29**Frameworks:** NestJS, FastAPI, Django, Express, Gin30**Databases:** PostgreSQL (ACID), MongoDB (flexible schema), Redis (caching)31**APIs:** REST (simple), GraphQL (flexible), gRPC (performance)3233See: `references/backend-technologies.md` for detailed comparisons3435## Reference Navigation3637**Core Technologies:**38- `backend-technologies.md` - Languages, frameworks, databases, message queues, ORMs39- `backend-api-design.md` - REST, GraphQL, gRPC patterns and best practices4041**Security & Authentication:**42- `backend-security.md` - OWASP Top 10 2025, security best practices, input validation43- `backend-authentication.md` - OAuth 2.1, JWT, RBAC, MFA, session management4445**Performance & Architecture:**46- `backend-performance.md` - Caching, query optimization, load balancing, scaling47- `backend-architecture.md` - Microservices, event-driven, CQRS, saga patterns4849**Quality & Operations:**50- `backend-testing.md` - Testing strategies, frameworks, tools, CI/CD testing51- `backend-code-quality.md` - SOLID principles, design patterns, clean code52- `backend-devops.md` - Docker, Kubernetes, deployment strategies, monitoring53- `backend-debugging.md` - Debugging strategies, profiling, logging, production debugging54- `backend-mindset.md` - Problem-solving, architectural thinking, collaboration5556## Key Best Practices (2025)5758**Security:** Argon2id passwords, parameterized queries (98% SQL injection reduction), OAuth 2.1 + PKCE, rate limiting, security headers5960**Performance:** Redis caching (90% DB load reduction), database indexing (30% I/O reduction), CDN (50%+ latency cut), connection pooling6162**Testing:** 70-20-10 pyramid (unit-integration-E2E), Vitest 50% faster than Jest, contract testing for microservices, 83% migrations fail without tests6364**DevOps:** Blue-green/canary deployments, feature flags (90% fewer failures), Kubernetes 84% adoption, Prometheus/Grafana monitoring, OpenTelemetry tracing6566## Quick Decision Matrix6768| Need | Choose |69|------|--------|70| Fast development | Node.js + NestJS |71| Data/ML integration | Python + FastAPI |72| High concurrency | Go + Gin |73| Max performance | Rust + Axum |74| ACID transactions | PostgreSQL |75| Flexible schema | MongoDB |76| Caching | Redis |77| Internal services | gRPC |78| Public APIs | GraphQL/REST |79| Real-time events | Kafka |8081## Implementation Checklist8283**API:** Choose style → Design schema → Validate input → Add auth → Rate limiting → Documentation → Error handling8485**Database:** Choose DB → Design schema → Create indexes → Connection pooling → Migration strategy → Backup/restore → Test performance8687**Security:** OWASP Top 10 → Parameterized queries → OAuth 2.1 + JWT → Security headers → Rate limiting → Input validation → Argon2id passwords8889**Testing:** Unit 70% → Integration 20% → E2E 10% → Load tests → Migration tests → Contract tests (microservices)9091**Deployment:** Docker → CI/CD → Blue-green/canary → Feature flags → Monitoring → Logging → Health checks9293## Resources9495- OWASP Top 10: 96- OAuth 2.1: 97- OpenTelemetry:
darthlinuxer