100 articles · page 6 of 23
JavaScript New Features from ES5 to ESNext
ECMAScript 5 (2009) Strict Mode ('use strict'): Enforces better coding practices. Array Methods: forEach, map,…
ES2023 Deep Dive: Change Array by Copy, findLast, Symbols as WeakMap Keys & Hashbangs
Comprehensive technical guide to ECMAScript 2023 (ES2023): Change Array by Copy (toSorted, toReversed, toSplic…
ES2022 Deep Dive: Private Class Fields, Top-Level Await, Object.hasOwn & Error.cause
Comprehensive technical guide to ECMAScript 2022 (ES2022): private class fields (#), static initialization blo…
ES2021 Deep Dive: String.replaceAll, Logical Assignment Operators, Promise.any & WeakRef Architecture
Architectural deep dive into ECMAScript 2021 (ES12): String.prototype.replaceAll, logical assignment operators…
Best Practices for Writing Unit Tests in Node.js
When writing unit tests in Node.js, following best practices ensures your tests are effective, maintainable, a…
How do you debug performance issues in a Node.js application?
Key Points:To debug performance issues in Node.js, start by identifying the problem, use profiling tools to fi…
ACID properties in relational databases and How they ensure data consistency
ACID properties are fundamental concepts in relational databases that ensure reliable transaction processing a…
Database Query Optimization: EXPLAIN ANALYZE, B-Tree Indexes & Connection Pooling
Comprehensive database query optimization guide: EXPLAIN ANALYZE execution plans, B-Tree composite & covering …
How would you decide between using MongoDB (NoSQL) and PostgreSQL (relational database) for a new application?
Deciding between MongoDB (NoSQL) and PostgreSQL (relational database) for a new application depends on several…
Managing Service Discovery and Failure Recovery in a Microservices-Based Node.js Application
In a microservices architecture, ensuring effective communication between services and handling failures grace…
Handling Load Balancing in a Horizontally Scaled Node.js App
Load balancing in a horizontally scaled Node.js application involves distributing incoming requests across mul…
What happens if func is an arrow function? Will this behave as expected?
In JavaScript, arrow functions behave differently from regular functions regarding the this keyword. Arrow fun…