Build a REST API for a resource of your choosing, such as a blog, a to-do list, or a bookstore. Implement all CRUD operations, handle errors properly and return appropriate status codes.

The REST API Challenge

Design and implement a relational database schema for a complex business domain like a bank or an e-commerce site. Use SQL to interact with the database.

The Database Challenge

Implement user authentication in a server application. Use secure hashing to store passwords and JSON Web Tokens (JWT) or sessions for keeping track of authenticated users.

The Authentication Challenge

Optimize a slow server application by adding caching. Use Redis or another caching system to store the results of expensive operations.

The Caching Challenge

Implement a server endpoint that handles file uploads from users. Store the files on disk or in a cloud storage service.

The File Upload Challenge

Implement a chat server using WebSockets. Allow users to send messages to each other in real time.

The Real-Time Communication Challenge

Break down a monolithic server application into a set of microservices. Use Docker to containerize each microservice.

The Microservice Challenge

Write a serverless function to handle a specific task, such as image processing or sending emails. Deploy the function to a platform like AWS Lambda.

The Serverless Function Challenge

Audit a server application for security vulnerabilities. Implement protections against common attacks like SQL injection and Cross-Site Scripting (XSS).

The Web Security Challenge

Implement rate limiting in a server application to protect against abuse. Use a token bucket or leaky bucket algorithm.

The Rate Limiting Challenge

Build a RESTful API for a specific domain (e.g., e-commerce, blogging).

RESTful API

Create an authentication system with registration, login, and password reset functionality.

Authentication System

A chat application that allows real-time communication between users.

Real-time Chat Application

An API for a task manager app, allowing users to manage and organize tasks.

Task Manager

Backend system for an e-commerce application.

Backend Developer

Learning Resources

Interview Prep

Core Concepts

Code Challenges

Projects ideas

Best Practices