Async Programming Scenarios in JavaScript

This repository contains real-world scenarios implemented using JavaScript Promises and asynchronous programming techniques.

📂 Scenarios

1. User Authentication

   • Check username and password with async simulation.
   • Add new users and assign passwords.

2. Image Loading

   • Simulates async image loading.
   • Uses Promise.race, Promise.allSettled, and error handling.

3. User Profiles & Posts

   • Fetch profiles and posts asynchronously.
   • Examples in parallel, series, and extended details.

4. Competing Servers (Promise.race)

   • Simulates fetching from multiple servers with random delays.
   • Demonstrates Promise.race() behavior.

5. Weather API Simulation Simulates fetching weather information asynchronously with random delays and errors.

   • Learnings: Handling promises with setTimeout, simulating real-world API delays.

6. File Download Progress Simulation

   • This project simulates file downloading with progress updates and intermittent connection interruptions. It demonstrates asynchronous JavaScript using Promises and setTimeout to mimic real-world file downloads.

7. API Batching

   • This project demonstrates API call batching in JavaScript using Promises. It simulates multiple API requests with random success/failure and allows processing them in batches, ensuring efficient and controlled execution.

8. Order Processing

   • Currently in prograss but i have made this project based on the research i did on e-commerce backend operation and made a simulation of of the processes involved while processing an operation.

🚀 Goal

This repo is part of my journey to master asynchronous programming in JavaScript. Each scenario reflects real-world cases where async logic is crucial.