what is mean by event loop in node.js ? javascript event loop or libuv event loop? -

in node.js lot talk event loop, want know event loop talking about, javascript event loop or libuv event loop ? guess libuv event loop provides abstraction multiple operating system of multiplexing i/o ? right? if not please explain how stuff works? need internal knowledge, know event loop is, want know how connected?

currently node uses the event loop provided libuv - namely default event loop: uv_default_loop(). see: an introduction libuv nikhil marathe:

a default loop provided libuv , can accessed using uv_default_loop(). should use loop if want single loop.

note: node.js uses default loop main loop. if writing bindings should aware of this.

there linuv architecture diagram on design overview page in libuv api documentation:

in past, libev's event loop used in node. see understanding node.js event loop mikito takada:

internally, node.js relies on libev provide event loop, supplemented libeio uses pooled threads provide asynchronous i/o. learn more, have @ libev documentation.

some resources on node event loop:

• understanding node.js event loop mikito takada
• understanding node.js felix geisendörfer
• understanding node.js event loop trevor norris
• node.js blocking, i/o non-blocking jeremy epstein
• an introduction libuv nikhil marathe
• the libuv api documentation

thanks saúl ibarra corretgé clarification in comments.