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noreferrer"}},[a("img",{attrs:{src:"https://i.stack.imgur.com/mWb6l.png",alt:"event loop diagram"}}),a("OutboundLink")],1)]),t._v(" "),a("p",[t._v("In simpler terms, Event Loop is a single-threaded queue mechanism which executes your CPU-bound code until end of its execution and IO-bound code in a non-blocking fashion.")]),t._v(" "),a("p",[a("strong",[t._v("However, Node.js under the carpet uses multi-threading for some of its operations through "),a("a",{attrs:{href:"http://libuv.org/",target:"_blank",rel:"noopener noreferrer"}},[t._v("libuv"),a("OutboundLink")],1),t._v(" Library.")])]),t._v(" "),a("h3",{attrs:{id:"performance-considerations"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#performance-considerations"}},[t._v("#")]),t._v(" Performance Considerations")]),t._v(" "),a("ul",[a("li",[t._v("Non-blocking operations will not block the queue and will not effect the performance of the loop.")]),t._v(" "),a("li",[t._v("However, CPU-bound operations will block the queue, so 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