😅 Being a single threaded language most of the people think that Javascript or NodeJS is slow and not... Tagged with javascript, webdev, programming, tutorial.

Mouad Dadda

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JavaScript is often perceived as slow and not scalable due to its single-threaded nature. However, for I/O intensive tasks, JavaScript (particularly NodeJS) performs well by delegating I/O operations to the underlying OS threads and continuing with other tasks. The post explains the blocking and non-blocking nature of JavaScript, the role of C++ APIs, and how async programming works using callbacks, promises, and the event loop.

Javascript Promises in depth with V8 engine internals