Tag: Node.js
64 posts
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API Rate Limiting Guide | Algorithms, Redis Implementation, and Best Practices
Implement API rate limiting from scratch. Covers token bucket, sliding window, fixed window algorithms, Redis implementation, Express/Fastify middleware, and production patterns.
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Axios Complete Guide | Promise-Based HTTP Client for JavaScript
Complete Axios guide for HTTP requests in JavaScript and Node.js. Learn GET/POST/PUT/DELETE, interceptors, error handling, cancellation, and best practices.
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bcrypt Complete Guide | Secure Password Hashing in Node.js
Complete bcrypt guide for password security. Learn hashing, salting, verification, cost factors, and implementing secure authentication in Node.js applications.
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Bull Queue Complete Guide | Redis-Based Job Queue for Node.js
Complete Bull guide for background jobs in Node.js. Learn job processing, retries, priorities, scheduling, and building reliable queue systems with Redis.
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Complete Bun Complete Guide | Ultra-Fast JavaScript Runtime, Package Manager, Bundler, Testing & Practical Usage
Complete guide to implementing fast JavaScript development with Bun. Node.js alternative, fast package installation, built-in bundler, test runner with ...
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Bun vs Node.js Performance Guide | Benchmarks, Migration, and Real-World Results
Compare Bun and Node.js with real benchmarks. Covers startup time, HTTP throughput, package install speed, TypeScript, and when to migrate from Node.js to Bun.
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CORS Complete Guide | Cross-Origin Resource Sharing in Node.js
Complete CORS guide for Node.js and Express. Learn what CORS is, how to configure it, handle preflight requests, and fix common CORS errors in web applications.
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Debugging Guide | Common Errors, Root Cause Analysis & Debugging Strategies
Systematic approach to debugging across JavaScript, Python, and backend systems. Covers reading stack traces, common error patterns, browser DevTools, Node.js debugging, performance profiling, and production debugging strategies.
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Debugging Memory Leaks Guide | Profiler, Heap Snapshots, Node.js, Python, Java
Find and fix memory leaks in Node.js, Python, and Java. Covers heap snapshots, profilers, garbage collection tuning, and common leak patterns with practical examples.
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Deno 2 Complete Guide | Node.js Compatibility, npm, and JSR
Deno 2 runs Node.js code and npm packages natively. Covers the Deno runtime, npm compatibility, JSR (JavaScript Registry), permissions model, built-in tooling, and migrating from Node.js.
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Docker Multi-Stage Build Guide | Optimization, Layer Caching & Security
Shrink Docker images from 1GB to under 100MB with multi-stage builds. Covers stage structure, layer caching strategies, .dockerignore, non-root users, secrets handling, and optimized Dockerfiles for Node.js, Python, and Go.
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dotenv Complete Guide | Environment Variables in Node.js
Complete dotenv guide for managing environment variables. Learn .env files, secrets management, multi-environment setup, and security best practices for Node.js apps.
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Drizzle ORM Advanced Guide | Transactions, Relations, and Performance
Go beyond basic Drizzle ORM usage. Covers transactions, relational queries, migrations, prepared statements, query builder patterns, performance optimization, and multi-tenant architectures.
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Drizzle ORM Complete Guide | Schema, Queries, Migrations & TypeScript
Master Drizzle ORM — the lightweight, type-safe SQL-first ORM for TypeScript. Covers schema definition in TypeScript, CRUD queries, relations, migrations with drizzle-kit, and PostgreSQL/MySQL/SQLite integration.
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Elasticsearch Practical Guide | Search, Aggregations, Mappings & Node.js
Build full-text search with Elasticsearch. Covers index mappings, CRUD operations, full-text search, bool queries, aggregations, autocomplete, relevance tuning, and Node.js integration with the official client.
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Electron Complete Guide | Build Desktop Apps with JavaScript
Build cross-platform desktop apps with Electron. Covers main/renderer processes, IPC, native APIs, auto-update, performance optimization, and distribution.
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Express.js Complete Guide | Fast Node.js Web Framework
Complete Express.js guide for building web apps and REST APIs. Learn routing, middleware, authentication, error handling, security, and production best practices.
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Helmet Complete Guide | Secure Express Apps with HTTP Headers
Complete Helmet guide for Express.js security. Learn security headers, CSP, XSS protection, and hardening Node.js applications against common attacks.
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Inngest Complete Guide | Event-Driven Background Jobs and Workflows
Run reliable background jobs and multi-step workflows with Inngest. Covers functions, events, step functions, retries, fan-out patterns, AI workflows, and deployment with Next.js and Node.js.
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Jest Complete Guide | JavaScript Testing, Mocking, Coverage & Snapshot
Master Jest for JavaScript and TypeScript testing. Covers test suites, matchers, mock functions, module mocking, spies, snapshot testing, code coverage, async testing, and CI integration.
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Joi Complete Guide | Powerful Schema Validation for JavaScript
Complete Joi guide for data validation in Node.js. Learn schemas, custom rules, async validation, and building robust validation with this powerful library.
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JWT Authentication Guide | Access Tokens, Refresh Tokens, Security & Node.js
Implement secure JWT authentication in Node.js. Covers JWT structure, access/refresh token patterns, HttpOnly cookies vs localStorage, token rotation, revocation strategies, and common security mistakes to avoid.
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Apache Kafka Complete Guide | Producers, Consumers, Topics & Node.js
Build event-driven systems with Apache Kafka. Covers core concepts, topics and partitions, producer/consumer patterns, consumer groups, offset management, Node.js integration with kafkajs, and production best practices.
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Koa.js Complete Guide | Next Generation Node.js Framework
Complete Koa.js guide for modern Node.js applications. Learn async/await, context object, middleware composition, and building REST APIs with this lightweight framework.
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Mongoose Complete Guide | MongoDB ODM for Node.js
Complete Mongoose guide for MongoDB and Node.js. Learn schemas, models, queries, validation, middleware, and building scalable MongoDB applications with TypeScript.
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Multer Complete Guide | File Upload Middleware for Node.js
Complete Multer guide for handling file uploads in Express. Learn single/multiple files, storage engines, validation, image processing, and security best practices.
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NestJS Complete Guide | Build Scalable Node.js APIs
Build production-grade APIs with NestJS. Covers modules, controllers, services, guards, pipes, TypeORM, and testing with practical TypeScript examples.
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Node.js + Nginx Reverse Proxy Setup | Production Configuration Guide
Configure Nginx as a reverse proxy for Node.js apps. Covers HTTP/HTTPS setup, SSL with Let's Encrypt, load balancing, gzip, caching headers, WebSocket proxying, and security hardening.
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Node.js Redis Caching Patterns | Cache-Aside, Write-Through, Session, and Rate Limiting
Implement production Redis caching in Node.js. Covers cache-aside, write-through, TTL strategies, session storage, pub/sub, rate limiting, and cache invalidation patterns.
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Nodemailer Complete Guide | Send Emails from Node.js
Complete Nodemailer guide for sending emails in Node.js. Learn SMTP, attachments, HTML emails, templates, and building transactional email systems.
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OAuth 2.0 & JWT authentication — token login, refresh flows, Passport, Google & Kakao
JWT and OAuth 2.0: sessions vs tokens, authorization code flow, PKCE, token endpoint, scopes and consent, Node.js/Passport, Google and Kakao, production patterns.
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Passport.js Complete Guide | Authentication Middleware for Node.js
Complete Passport.js guide for Node.js authentication. Learn local strategy, OAuth (Google, GitHub, Facebook), JWT, sessions, and building secure login systems.
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PM2 Complete Guide | Production Process Manager for Node.js
Complete PM2 guide for Node.js production deployment. Learn process management, clustering, monitoring, logging, zero-downtime reloads, and scaling Node.js apps.
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pnpm Complete Guide | Fast Disk Space Efficient Package Manager
Complete pnpm guide for Node.js package management. Learn installation, workspaces, monorepo setup, and why pnpm is 3x faster than npm with efficient disk usage.
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Prisma Complete Guide | Schema, Queries, Migrations, Relations & Performance
Master Prisma ORM for Node.js and TypeScript. Covers schema definition, CRUD operations, relations, migrations, transactions, raw queries, performance optimization with select/include, and connection pooling.
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RabbitMQ Complete Guide | Message Queues, Exchanges, and Patterns
Master RabbitMQ for reliable async messaging. Covers AMQP concepts, exchanges, queues, bindings, dead letter queues, and Node.js / Python integration.
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Redis Complete Guide | Caching, Pub/Sub, Streams, Rate Limiting & Sessions
Master Redis for production use. Covers data types, cache-aside and write-through strategies, Pub/Sub messaging, Redis Streams, rate limiting, session management, pipelining, and cluster setup — with Node.js TypeScript examples.
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Socket.IO Complete Guide | Real-Time Apps, Rooms, Broadcasting
Build real-time applications with Socket.IO. Covers WebSocket, Rooms, Broadcasting, Namespaces, and authentication with practical Node.js examples.
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WebSocket Complete Guide | Real-Time, Socket.io, Chat, Notifications, Games
Build real-time features with WebSocket: native API, Socket.io, chat patterns, Redis scaling, plus RFC 6455 handshake, frames, text vs binary, and heartbeats.
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Winston Complete Guide | Node.js Logging Library
Complete Winston guide for Node.js logging. Learn transports, formats, log levels, error handling, and building production-ready logging for your applications.
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Docker Compose: Node API, PostgreSQL, Redis in One Stack | Production Template
Production-style Docker Compose for Node.js: define API, PostgreSQL, and Redis in one stack with docker-compose.yml, env, health checks, volumes, and re...
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GitHub Actions CI/CD Tutorial for Node.js | Test, Build, Docker & Deploy
GitHub Actions CI/CD tutorial for Node.js: lint and test on PRs, build Docker images, push to GHCR, deploy with SSH or your platform—cache, secrets, and...
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[2026] JWT authentication complete guide — structure, access & refresh tokens, security, Next.js & Express
Production-oriented JWT guide: structure, signing, access/refresh pattern, HttpOnly cookies, blacklist, CSRF, and Node.js/Next.js examples. Security checklist included.
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Kubernetes Deployment with minikube | Node.js API, Deployment & Service
Run a local Kubernetes cluster with minikube, load container images, apply Deployment and Service manifests, port-forward, and debug ImagePullBackOff—ku...
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Nginx Reverse Proxy Configuration for Node.js | SSL, upstream & Logs
Nginx reverse proxy for Node.js: upstream blocks, proxy headers, TLS with Let’s Encrypt, WebSocket upgrades, rate limits, and trust proxy settings—produ...
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Redis Caching Strategies | Cache-Aside Through Refresh-Ahead & TTL Patterns
Five Redis caching patterns—Cache-Aside, Read-through, Write-through, Write-behind, Refresh-ahead—with TTL, invalidation, and Node.js-oriented examples ...
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AWS Deployment for Node.js | EC2, Elastic Beanstalk & Lambda Basics
Deploy Node.js on AWS: EC2 bootstrap with PM2 and Nginx, Elastic Beanstalk with eb CLI, and serverless Lambda with serverless-http—security groups, env vars, and rollout notes.
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Docker Compose Tutorial for Beginners | Multi-Container Apps Explained
Docker Compose tutorial: services, networks, volumes, depends_on, and env files—run a Node app with MongoDB and Nginx from one docker-compose.yml with clear commands.
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JavaScript Promise & async/await Complete Guide | Async Patterns for Node & Browser
JavaScript Promise and async/await tutorial: callbacks vs Promises, Promise.all/race/allSettled, error handling, and the event loop—patterns for Node.js...
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Node.js & JavaScript Error Handling Best Practices | try/catch & async
Error handling best practices for Node.js and JavaScript: try/catch/finally, custom errors, Promise and async/await failures, Express middleware, and st...
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Express REST API Tutorial for Node.js | Routing, Middleware & CRUD
Express REST API tutorial: routes, JSON body parsing, middleware pipeline, CRUD APIs, error handling, and security basics—learn to build production-styl...
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Node.js JWT Authentication Complete Guide | bcrypt, Sessions & OAuth
JWT authentication in Node.js: bcrypt password hashing, access and refresh tokens, Express middleware, sessions, Passport OAuth, and security headers—co...
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Sequelize ORM Complete Guide for Node.js | PostgreSQL, Models & Migrations
Sequelize ORM with Node.js: models, associations, PostgreSQL and MySQL, connection pools, transactions, migrations, and Express REST patterns—plus raw S...
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Getting Started with Node.js: Install, Setup, and Hello World
Node.js tutorial for beginners: install Node and npm on Windows, macOS, and Linux, run Hello World, use npm scripts, and understand modules, fs, and HTT...
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Node.js Module System: CommonJS and ES Modules Explained
Master Node.js modules: require vs import, module.exports vs export, resolution, caching, circular dependencies, package.json, and interoperability—esse...
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Node.js Async Programming: Callbacks, Promises, and Async/Await
Learn Node.js async I/O: callbacks, error-first style, Promises, async/await, the event loop, streams, and patterns for APIs and file pipelines—essentia...
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Express.js Complete Guide: Node.js Web Framework and REST APIs
Express.js tutorial: routing, middleware, JSON APIs, CRUD, Multer uploads, JWT auth basics, EJS, security (Helmet, CORS, rate limit), and production tip...
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Node.js File System: Complete Guide to the fs Module
Node.js fs module guide: sync vs async APIs, fs.promises, read/write JSON, directories, streams, watch, chokidar, errors, and performance—essential for ...
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Node.js Database Integration: MongoDB, PostgreSQL, and MySQL
Connect Node.js to MongoDB (Mongoose), PostgreSQL (pg, Sequelize), and MySQL (mysql2): connection pools, CRUD, transactions, REST examples, indexes, N+1...
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Node.js Authentication and Security: JWT, bcrypt, Sessions, OAuth
Secure Node.js APIs: hash passwords with bcrypt, issue and verify JWTs, refresh tokens, express-session with Mongo store, Passport Google OAuth, Helmet,...
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Node.js Testing: Jest, Mocha, and Supertest
Test Node.js apps with Jest matchers and mocks, async tests, Supertest for Express APIs, MongoDB memory server, integration tests, coverage thresholds, ...
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Node.js Performance: Clustering, Caching, and Profiling
Node.js performance guide: use clustering for multi-core, Redis and in-memory caching, fix N+1 queries, profiling with --prof and clinic.js, benchmarkin...
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TypeScript REST API Project | Express, Layered Architecture, Types
TypeScript REST API tutorial: Express, tsconfig, DTOs (Omit/Partial), controller/service/database layers, ApiResponse JSON, and curl examples for user C...
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Get Started with JavaScript | The Essential Web Language — A Complete Introduction
JavaScript tutorial for beginners: ECMAScript and runtimes, core syntax, and var vs let vs const—with examples you can run in the browser or Node.js.