What is a 302 redirect and in what cases is it necessary?

Redirect – SEO WIKI

A 302 redirect is a “temporary” redirect of users from a page with one URL to a page with a different URL.

By itself, a “redirect” means that the user enters URL No. 1 (site.ru/straniza) into the address bar of the browser, but in fact the URL No. 2 opens (site.ru/drugaya-straniza).

In the context of SEO, 301 and 302 redirects control the appearance of pages in search results. 301 redirect is a signal to the search engine that the old page needs to be removed from the search results. With a 302 redirect, the source address remains in the search results, despite the redirection.

302 redirect by seo-specialists is applied if temporary technical work is going on on the site and the page content changes for the same limited period of time (for example, the page is stubbed “Sorry, the site is temporarily down – technical work is in progress”). In other cases, setting up a 302 redirect is not worth it.

How do Google and Yandex search engines react to a 302 redirect?

In the search results, the old URL remains for 6 months after setting up the redirect. If the redirect is not removed, then the search engines put in a new URL.