Why NodeJS is single threaded

Описание: Understanding Node.js's Event Loop & Single-Threaded Nature 🚀

Event Loop:    • Event Loop Execution & Break | Important |...  

Node.js runs JavaScript in a single thread, leveraging event-driven, non-blocking I/O to handle multiple operations efficiently. Perfect for developers looking to grasp backend fundamentals!
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Key Points:

Node.js uses V8 engine with single main thread and event loop
Asynchronous operations handled via libuv thread pool
Event-driven architecture prevents blocking operations
Worker Threads module enables true parallel execution
Cluster module helps utilize multiple CPU cores
Non-blocking I/O operations handled by system kernel
Best for I/O intensive tasks, not CPU-heavy computations
Event loop phases: timers, callbacks, polling, check, close
Memory efficiency through single thread management
Scalability achieved through asynchronous architecture

Common Issues:

CPU-intensive tasks can block main thread
Complex calculations need worker threads
Memory leaks impact single thread performance
Callback hell in asynchronous operations
Error handling in single-threaded environment

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