100 articles · page 6 of 23
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…
What strategies would you use to optimize database queries and improve performance?
To optimize database queries and improve performance, I recommend a structured approach that addresses both th…
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…
What are closures in JavaScript?
A closure in JavaScript is a function that retains access to its lexical scope, even after the outer function …
JavaScript - let, const, var
In JavaScript, var, let, and const are three different ways to declare variables, each with distinct behaviors…
2467. Most Profitable Path in a Tree
There is an undirected tree with n nodes labeled from 0 to n - 1, rooted at node …
Binary Search ---- AGAIN!
Gotta grind the basics, so you don't forget. int binarySearch(vector &nums, int target) { int low =0, high = n…
Parenthesis Checker
Given a string s, composed of different combinations of '(' , ')', '{', '}', '[', ']', verify the validity of …
Stock Span
The stock span problem is a financial problem where we have a series of daily price quotes for a stock and we …