error-resilience-expert

# Error & Resilience Expert (2026 Edition) [English](#english) | [Bahasa Indonesia](#bahasa-indonesia) --- <a name="english"></a> ## English ### Orchestration & Integration Connects and orchestrates with relevant domain skills like `brainstorming`, `zero-to-prod-orchestrator`, and `project-context-mapper` to ensure cohesive execution. ### Description Production-grade guide for building resilient applications that fail gracefully, recover automatically, and provide actionable error feedback to users and developers. Covers **React Error Boundaries**, **Next.js error handling** (`error.tsx`, `global-error.tsx`, `not-found.tsx`), **API error response standards** (RFC 9457 Problem Details), **retry patterns** with exponential backoff, **circuit breaker patterns**, **dead letter queues**, and **Sentry/BugSnag** integration. ### Trigger Conditions Activate this skill when: - Setting up error handling for React/Next.js applications. - Implementing retry logic for unreliable API calls or third-party services. - Designing circuit breaker patterns for microservice-to-microservice calls. - Building fallback UI for degraded service states. - Integrating error tracking tools (Sentry, BugSnag, LogRocket). - Handling transaction failures in database operations. - Designing dead letter queues for failed async jobs. --- ### Core Concepts #### Error Handling Philosophy | Principle | Description | |---|---| | **Fail Fast** | Detect and report errors early; don't let invalid state propa...