Answer
Scale horizontally using clustering and multiple instances behind a reverse proxy. Use caching, message queues, sharding, CDN offloading, and stateless microservices to ensure modular and scalable design.
Quick Answer
Scalable Node.js architecture uses: horizontal scaling (multiple instances behind a load balancer), stateless design (sessions in Redis, not in-process), async I/O throughout, event-driven communication between services, caching at every layer, and a message queue (RabbitMQ, Kafka) for decoupled background processing.
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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