HTTP Redirect

• 301: moved permanently
• 302: moved temporarily

Problem

There's issue with 301 redirect that the response will be cached indefinitely by browser, unless cache-control headers are set manually.

For migration purpose,

either use 302 to avoid losing control over redirect urls.

or set cache control headers manually

Cache-Control: no-store, no-cache, must-revalidate

How to fix?

https://superuser.com/questions/467999/clear-301-redirect-cache-in-firefox (opens in a new tab)

Network tab disable cache.

Or

Clear dns cache in chrome/FF

chrome://net-internals/#dns

about:networking#dns