Build REST API with Node Express MongoDB - Event Loop and Event Queue #10

#node #async #queues #callbacks
Event Queue:
The event queue is a data structure that holds events and associated callback functions. In Node.js, events are generated when asynchronous operations complete, such as I/O operations or timer expirations. The event queue stores these events and ensures that their corresponding callbacks are executed in the correct order.

Callbacks:
Callbacks are functions that are passed as arguments to other functions and are invoked at a later time, usually when a specific event or condition occurs. In Node.js, callbacks are commonly used for handling asynchronous operations. For example, when performing a file read operation, a callback function can be provided to be executed once the file is read and the data is available.

Event Loop:
The event loop is a mechanism provided by Node.js that allows for non-blocking, asynchronous execution of JavaScript code. It is responsible for managing the event queue and executing the associated callbacks when events occur. The event loop follows a specific cycle of phases, as described in the previous response, to handle events, I/O operations, timers, and other tasks efficiently.

Contact us for development services:
https://www.linkedin.com/in/umair-jameel-24aa5368/

Видео Build REST API with Node Express MongoDB - Event Loop and Event Queue #10 канала Programming with Umair