Redirect

Redirect it is through a variety of methods to various network request to set a direction to other locations ( such as: webpage redirection, domain name redirection, the changes to the routing of data packets via a path is a redirect ).

Webpage redirection

We in the construction site, often encounter the need to webpage redirection of : 1 site adjustment (e.g. change webpage directory structure);

2 webpage is moved to a new address;

3 webpage extension change (such as applied to . PHP to . Html or . Shtml ).

In this case, if not to be redirected, the user favorites or a search engine database access only to the old address customer will get a 404 error pages of information, access to the flow of wasted; furthermore some registers a plurality of domain name of the website, also need to access these domain names by redirecting the user automatically jump to the primary site.

Detailed introduction

Commonly used to redirect the way: 301 redirect, 302 redirect and meta fresh.

301 redirect

301 represents the permanent transfer ( Permanently Moved ), 301 redirection is webpage address change on the search engine friendly way, as long as not temporarily move, recommend the use of 301 to turn the address.

302 redirect

302 representative Temporarily Moved ), in the past few years, many Black Hat SEO has wide application of this technology to cheat, at present, the major search engines are strengthened crackdown, like Google a few years ago on the domain of the king ( Business ) and recently on the BMW site in Germany. Even if the website objectively not spam, can easily be mistaken for spam search engine to be punished.

Meta fresh

This in 2000 before the more popular, but is now very rare. The concrete is through the webpage of a meta instruction, in a certain period of time are redirected to the new webpage, if the delay time is too short ( about 5 seconds ), will be judged as spam.