libuv

Question 1

Library “libuv”

Answer 1

Is a C library that Node.js uses to implement:

1) asynchronous I/O,
2) event loop,
3) file system, networking, sockets, timers, etc.

Question 2

How many libuv working threads are there in Node.js?

Answer 2

Default 4
Can be increased to 1024
Previously it was up to 128

These are all libuv limitations
Each thread runs on 1 processor core

Question 3

How to increase the number of libuv working threads ?

Answer 3

process.env.UV_THREADPOOL_SIZE =

Question 4

С++ Bindings

Answer 4

C++ bindings in Node.js are a bridge between JavaScript and C++ that allow you to call native code directly from Node.js, usually to improve performance or access system capabilities.

Question 5

True or False, libuv automatically places blocking operations in a separate thread when working with event loop

Answer 5

True