- Deep dive Callback, Promise and Async/Await in Node.js - How to handle long running process in Node.js

1. Async Programming
with Node.js

2. Synchronous Programming

3. Synchronous Programming
START File Read
DB
Operation
Send HTTP
Response
FINISH
Receive
HTTP
Request

4. Synchronous Programming in Node.js

5. Asynchronous Programming in Node.js

6. Event Loop
In computer science, the event loop is a programming construct or design pattern that waits for and
dispatches events or messages in a program. The event loop works by making a request to some
internal or external "event provider" (that generally blocks the request until an event has arrived),
then calls the relevant event handler ("dispatches the event"). The event loop is also sometimes
referred to as the message dispatcher, message loop, message pump, or run loop.

7. Event Loop

8. Event Loop

9. Callback, Promise, Async/Await

10. Callback, Promise, Async/Await

11. Callback, Promise, Async/Await

12. Callback, Promise, Async/Await

13. Callback, Promise, Async/Await

14. Thank You