Redirect Caching

Redirect caching stores redirect responses in browser caches, CDN edge nodes, or intermediate proxies to serve subsequent requests without contacting the origin server. Caching behavior is controlled by HTTP headers (Cache-Control, Expires) and the redirect status code. 301 redirects are cached aggressively by browsers—often indefinitely—while 302 redirects are typically not cached. This distinction has major implications for link management flexibility. URL shortening services must carefully balance redirect caching for performance against the need for destination updates. Aggressive caching reduces server load and improves latency but prevents immediate destination changes. Services often use short cache TTLs (minutes to hours) that provide performance benefits while maintaining the ability to update or revoke links within a reasonable timeframe.