What Are 3xx Redirection Responses?
HTTP 3xx Redirection Responses indicate that the client must take additional action before completing a request.
These responses are commonly used when resources move location, content is cached, or traffic needs to be redirected.
Common 3xx Status Codes
301 Moved Permanently - A resource has permanently moved.
302 Found - A temporary redirect.
304 Not Modified - The cached version can be used.
301 Moved Permanently
A 301 response tells clients and search engines that a resource has permanently moved to another location.
HTTP/1.1 301 Moved Permanently302 Found
A 302 response is used for temporary redirects.
Common examples include login redirects and temporary maintenance pages.
304 Not Modified
A 304 response allows clients to use a cached copy of a resource.
This reduces bandwidth usage and improves performance.
Why 3xx Responses Matter For DevOps
Managing URL migrations
Configuring reverse proxies
Optimising caching
Troubleshooting unexpected routing behaviour
Summary
HTTP 3xx responses are essential for managing how clients discover and retrieve resources across modern web infrastructure.