Answer
Use supervisors like PM2 or Kubernetes, implement circuit breakers, retries, graceful degradation, dead-letter queues, and distributed load balancing for self-healing architectures.
Quick Answer
Fault-tolerant Node.js: use a process manager (PM2) to restart crashed processes automatically, implement circuit breakers for downstream services (opossum), handle Promise rejections and uncaught exceptions, design APIs to be idempotent, use retries with exponential backoff, and deploy across multiple instances so one crash doesn't cause downtime.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ