ExpressJs
Introduction to Express.js
Express.js is a minimal and flexible Node.js web application framework that provides a robust set of...
Installing Express.js
To use Express, install it using npm. Then, require it in your project and create an app instance to...
Basic Routing
Routing determines how an application responds to client requests at specific endpoints. Express pro...
Middleware Basics
Middleware functions are functions that have access to the request and response objects. They are us...
Serving Static Files
Express makes it easy to serve static files like HTML, CSS, and images by using the built-in express...
Express JSON Middleware
To handle JSON data sent by clients, Express provides built-in middleware to parse JSON request bodi...
Route Parameters and Query Strings
Express allows you to capture values from URLs using route parameters and query strings for dynamic ...
Using Template Engines
Template engines like EJS or Pug allow you to dynamically generate HTML pages from data on the serve...
Modular Routes
Separate routes into different files for cleaner, more maintainable code by using express.Router()....
Error Handling Middleware
Handle errors globally by creating a custom middleware that captures errors and returns a proper res...
Express with MongoDB
Integrate Express with a database like MongoDB using Mongoose to store and retrieve data dynamically...
Building a RESTful API
Create a REST API with Express by handling different HTTP methods like GET, POST, PUT, and DELETE fo...
Authentication with JWT
Use JSON Web Tokens (JWT) for secure authentication in your Express app....
CORS in Express
Enable Cross-Origin Resource Sharing (CORS) so your API can be accessed from different domains secur...
Express and File Uploads
Handle file uploads using the Multer middleware in Express....
Rate Limiting and Security
Add security to your API by limiting requests and preventing common attacks like brute force or DDoS...
Logging and Debugging
Use tools like Morgan or Winston for logging requests and errors to help with debugging and monitori...
Testing Express Apps
Test your Express app using tools like Mocha, Chai, or Jest to ensure it works as expected....
WebSockets with Express
Integrate WebSockets into your Express app to build real-time features like chat applications or liv...
Deploying an Express App
Deploy your Express app to platforms like Heroku, AWS, or Vercel by setting up production scripts an...
Cluster Mode for Scaling
Node.js runs on a single thread by default. Express apps can use the Node.js 'cluster' module to run...
Load Balancing Express Apps
Distribute traffic across multiple Express app instances using a reverse proxy or load balancer like...
Using PM2 for Process Management
PM2 is a production process manager for Node.js applications that helps manage multiple instances, l...
Microservices with Express
Break large monolithic apps into smaller microservices, each handling a specific domain or functiona...
API Gateway Integration
An API gateway acts as a single entry point for clients and routes requests to different microservic...
Message Queues with Express
Use message brokers like RabbitMQ or Kafka to enable asynchronous communication between services, pr...
Caching with Redis
Improve performance by caching frequently requested data using Redis. This reduces database load and...
WebSockets for Real-Time Features
Add real-time capabilities like live chat, notifications, or tracking using WebSockets with librarie...
GraphQL with Express
Integrate GraphQL into your Express app to create flexible APIs with strongly typed schemas and reso...
Dockerizing Express Apps
Containerize your Express app using Docker to ensure consistent deployments across different environ...
CI/CD Pipeline for Express
Automate testing, building, and deploying your Express app using CI/CD tools like GitHub Actions, Gi...
Server-Side Rendering (SSR)
Use Express to serve pre-rendered HTML for SEO-friendly and faster-loading pages, often paired with ...
Monitoring and Performance Metrics
Monitor your Express app's performance using tools like New Relic, Datadog, or Prometheus to identif...
Scaling Databases for Express
Learn how to scale your database to handle high traffic using read replicas, sharding, and connectio...
Advanced Security Best Practices
Secure your Express app by implementing Helmet, sanitizing inputs, and following OWASP guidelines to...
Final Deployment and Scaling Strategy
Deploy your production-ready Express app using Docker, Kubernetes, and cloud services like AWS or GC...