Tag: nodejs

Browse 27 practical software engineering resources tagged with "nodejs". Discover code recipes, design patterns, documentation templates, and in-depth guides to help you build, deploy, and maintain production-ready solutions involving nodejs.

Express.js Middleware Composition Patterns

Build maintainable Express applications using middleware composition patterns for authentication, validation, error handling, request context propagation, and async route wrappers

express nodejs middleware api

Build a GraphQL API with Apollo Server and TypeScript

How to build a production-ready GraphQL API using Apollo Server, TypeScript, and DataLoader to solve the N+1 query problem

graphql api typescript nodejs

Node.js WebSocket Real-Time Communication with Socket.io

Build real-time WebSocket applications in Node.js with Socket.io

nodejs websocket socket.io realtime

Server-Sent Events with Node.js and Express

Implement real-time server-to-client push using Server-Sent Events in Node.js with Express, covering connection management, event types, reconnection logic, and backpressure handling

sse real-time nodejs express

Build a Bidirectional Chat with WebSocket and Node.js

How to build a real-time bidirectional chat application using WebSocket with room-based messaging, presence tracking, and message persistence

bidirectional websockets real-time nodejs

Node.js JWT Authentication: Verify and Refresh Tokens

Implement JWT authentication in Node.js with access and refresh tokens

nodejs jwt authentication express

Node.js OAuth2 GitHub Login with Express

Implement GitHub OAuth2 login flow in Node.js with Express and Passport

nodejs oauth2 github express

Implement an LRU Cache in Node.js

Build a least-recently-used cache in Node.js with O(1) get and set operations using a Map-based doubly linked list

nodejs lru cache in-memory cache caching

Implement Redis Cache Invalidation in Node.js

Invalidate Redis cache entries in Node.js with TTL expiry, explicit deletion, pattern-based clearing, and pub/sub-based distributed invalidation.

nodejs redis cache-invalidation pub-sub

Merge JSON Files in JavaScript

Combine multiple JSON files with conflict resolution strategies using Node.js.

json javascript nodejs data-processing

CRUD Operations with MongoDB and Mongoose

How to perform Create, Read, Update, and Delete operations in MongoDB using Mongoose ODM with Node.js and Express

mongodb database nodejs databases

Node.js Caching with Redis: Cache-Aside and TTL Patterns

Cache API responses in Node.js with Redis using cache-aside and TTL patterns

nodejs redis caching ioredis

Generate Temporary Files

How to create temporary files and directories safely with automatic cleanup across Python, Node.js, Java, and Bash.

file-handling temp-files cleanup python

Node.js File Upload Validation: Type, Size, and Content

Validate file uploads in Node.js with multer for type, size, and content

nodejs express multer file-upload

Stream Process Large Files in Node.js Without Memory Issues

Process GB-sized files in Node.js using streams. Covers readline, transform streams, pipeline, backpressure, and chunk processing.

nodejs streams files performance

Rotate Log Files

How to implement log rotation by size, date, and count to prevent disk exhaustion across Python, Node.js, Java, and Linux systems.

file-handling logging rotation python

WebSockets for Real-Time Communication

Build bidirectional real-time communication with WebSockets, handling connection management, reconnection, and fallbacks.

real-time nodejs frontend ui

High-Performance Logging with pino

How to use pino for fast structured JSON logging in Node.js, including log levels, child loggers, transports, and integration with Express and Fastify.

observability nodejs logging pino

Error Tracking with Sentry in Express

How to integrate Sentry for error tracking in Node.js Express applications, including error handlers, performance monitoring, release tracking, and source maps.

observability nodejs sentry error-tracking

Rotate Logs Daily with Winston

How to configure daily log rotation in Node.js using winston and winston-daily-rotate-file, including size limits, retention, compression, and transport combining.

observability nodejs winston logging

Enforce Security Rules in Node.js with

How to configure eslint-plugin-security to detect insecure patterns in Node.js code, handle false positives, and integrate with CI/CD pipelines.

security nodejs eslint static-analysis

Configure HTTP Security Headers with Helmet in Node.js

Set security HTTP headers in Express apps with Helmet — CSP, HSTS, X-Frame-Options, X-Content-Type-Options, and CORS for OWASP-compliant web security

nodejs helmet security headers express

Password Hashing in Production

Securely hash and verify passwords using bcrypt, scrypt, and Argon2 with what works.

bcrypt security authentication nodejs

Deploy HTTP Cloud Functions on Google Cloud with Node.js

Create and deploy HTTP-triggered Cloud Functions on Google Cloud with Node.js, Express integration, secrets management, and gcloud CLI deployment.

gcp cloud-functions nodejs http-trigger

Test Express APIs with supertest

How to test Express.js REST API endpoints end-to-end using supertest, including status codes, JSON bodies, headers, authentication, and error handling.

testing nodejs express supertest

Chain of Responsibility for Request Processing Middleware

Pass requests along a chain of handlers where each handler decides whether to process the request or pass it to the next handler in the pipeline

chain-of-responsibility behavioral-patterns nodejs design-pattern

Testcontainers: Real Dependencies in Integration Tests

Master Testcontainers for integration testing with real databases, message brokers, and APIs. Covers Java, Python, and Node.js with Docker-based test fixtures.

guide testcontainers integration-testing docker