# Code Review Backend

> General backend code quality review

- Skill: `ruano/code-review-backend` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ruano/code-review-backend`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ruano/code-review-backend/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ruano (https://skillmd.com/u/ruano)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/ruano/code-review-backend

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## Instructions

- Apply SOLID principles
- Identify code smells
- Check error handling
- Evaluate readability and maintainability
- Suggest refactoring when needed
- Prefer Span/ReadOnlySpan over Substring in allocation-sensitive parsing paths

## Questions to ask:

### Edge cases:

- Are nulls handled correctly? 
- Are timeouts handled? 
- Is there a proper error boundary? 
- Is there a recovery path? 
- What happens under partial failure? 
- What happens with invalid or unexpected input? 

### Performance & Scalability:

- Any N+1 query risks? 
- Potential memory leaks? 
- Cache invalidation concerns? 
- Resource locking or contention? 
- Excessive allocations or unnecessary I/O? 
- Will this scale under load? 

### Production Readiness

- Are logs meaningful and actionable? 
- Is monitoring/observability in place? 
- Is there a rollback strategy? 
- Is backup/recovery considered? 
- Are retries/idempotency handled correctly? 
- Are failures visible and traceable?

## Philosophy

Prioritize:

- Correctness
- Reliability 
- Resilience 
- Observability 
- Performance 
- Maintainability 

Only then discuss formatting and style.

## Output Format

- Findings
- Suggested improvements