What is ReactJS ? Highlight some advantages of ReactJS ? What are props and state in React ? What are refs in React ? What are the key differences between react and angular ? What are the important lifecycle methods in react ? How to share data […]
Designing a URL Shortening service like TinyURL Let’s design a URL shortening service like TinyURL. This service will provide short aliases redirecting to long URLs. Similar services: bit.ly, goo.gl, qlink.me, etc. Difficulty Level: Easy 1. Why do we need URL shortening? URL shortening is used to create shorter aliases for long URLs. We call […]