A 301 code tells that that particular page is permanently moved to another location, basically, it is used to make sure that Search Engines and general users are sent to the correct page. Now users can see the new URLs when it comes to the search engine result.
A 301 redirect is a permanent redirect from one URL to the new one. The 301 code redirection should be used when:
So in 301 redirections, your previous page will be replaced with the new page permanently. This redirection is for when you know the URL will be on a new page for a year or more.
A simple example of a 301 redirect is that URL like site.com redirected to www.site.com.
A 302 resurrection/redirection is used for a temporary basis and directs users and search engines to the redirected page for a limited time period. It may be shown as a move temporarily (HTTP 1.0) or 302 found (HTTP 1.1).
Webmasters used 302 redirects rather than 301. Some may hope to avoid the Google ageing delay connected with a 301 redirect.
Whether or not a 302 or 301 redirect became an issue for Google that was intended to improve the experience of search engines and webmasters. It may have regularly used a 302 redirect because they did not know the difference between these two.
It causes some issues for the rankings of search engines and more like continued indexing of an old URL and dividing of the link properly between the URLs can occur.
When Should a 302 Redirect Be Used?
There are several times when we use 302 code redirection. Add a 302 redirect for:
302 redirects are not used as a permanent solution, it’s used when webmasters need to assess performance or provide feedback.