Node.js Interview - Advanced Level
For senior developers with 4+ years of Node.js experience. Master cluster module, worker threads, microservices, performance optimization, and scalable architectures.
35-45 minutes
4+ years of Node.js experience
Who is this for?
Senior Node.js engineers
Technical leads and architects
Engineers building high-scale systems
Those preparing for senior/staff roles
What you'll practice
Architecting scalable Node.js systems
Using cluster module for scaling
Working with worker threads
Performance optimization techniques
Microservices patterns
Production monitoring and debugging
Topics covered
Scalability
Cluster module
Worker threads
Child processes
Horizontal scaling
Load balancing
Performance
Memory profiling
CPU profiling
Garbage collection tuning
Database optimization
Caching strategies
Microservices
Service communication
Message queues
API Gateway patterns
Service discovery
Circuit breakers
Production
Monitoring and observability
Logging strategies
Error tracking
Security best practices
Deployment strategies
Example questions
Q:
How does the cluster module work and when should you use it?
Q:
What is the difference between worker threads and child processes?
Q:
How would you architect a Node.js microservices system?
Q:
How do you handle memory leaks in Node.js?
Q:
What strategies do you use for performance optimization?
Q:
How do you implement circuit breakers in a microservices architecture?
Preparation tips
Build a system using the cluster module
Understand memory management deeply
Study microservices patterns
Learn about message queues (RabbitMQ, Kafka)
Practice performance profiling
Review production monitoring tools
Continue your journey
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