Securing Your Rest API Application With Typescript

Throttling manages high request volumes by slowing down requests instead of blocking them. Unlike rate limiting, which rejects excess requests, throttling adds delays when thresholds are exceeded. This keeps your API responsive and stable during traffic spikes.

Modern web apps often need to fetch resources from different domains. CORS defines how servers declare which origins can make requests. By default, browsers block cross-origin requests, so you'll configure your Express server to respond with the necessary headers.

Modern web applications frequently rely on refresh tokens to seamlessly re-authenticate users without forcing them to log in repeatedly. While convenient, mishandling refresh tokens can grant attackers near-permanent access.