added two articles in Message Queue and Event Loop section

README.md

@@ -372,7 +372,8 @@ All the translations for this repo will be listed below:
 -  [Tasks, microtasks, queues and schedules — Jake Archibald](https://jakearchibald.com/2015/tasks-microtasks-queues-and-schedules/)
 -  [Visualising the JavaScript Event Loop with a Pizza Restaurant analogy — Priyansh Jain](https://dev.to/presto412/visualising-the-javascript-event-loop-with-a-pizza-restaurant-analogy-47a8)
 -  [JavaScript Visualized: Event Loop — Lydia Hallie](https://dev.to/lydiahallie/javascript-visualized-event-loop-3dif)
-
+-  [setTimeout vs setImmediate in JavaScript — Navneet Singh](https://medium.com/@navneetskahlon/settimeout-vs-setimmediate-in-javascript-a2eaab973490)
+- [Understanding and Optimizing JavaScript’s Event Loop — Xiuer Old](https://medium.com/javascript-zone/understanding-and-optimizing-javascripts-event-loop-717ae0095038#:~:text=The%20event%20loop%20is%20the,%2Dblocking%20I%2FO%20operations.)
 ### <img align=center width="40" height="40" src="https://img.icons8.com/dusk/64/video.png" alt="video"/>  Videos
 
 - [What the heck is the event loop anyway? | JSConf EU — Philip Roberts](https://www.youtube.com/watch?v=8aGhZQkoFbQ)