Under the age of the Internet rapid development prospects and expensive bid that afflict so low cost in most enterprises of professional - seo was born, the number is increasing every year, but the Internet garbage information more and more, so the search engine in order to better cater to the user experience also held the frequent adjustment algorithm.During this time, of course, there are also many sites are down right be K off, even as for some reason, there are a lot of from the post of friends also can not find the root cause of the problem thoroughly, and the following in personal experience for many years to expand the share, hope I can help you recover at an early date website ranking.
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A, space problems Because the space access speed is not stable, sometimes slow sometimes can't open, was right to drop for this case is also a lot of.So the author suggest do your own web site here before must not covet is cheap and buy a cheap room, should choose to have the security and speed of the domestic space.Want to know if their sites in the previous update appear can't open the space under the condition of log, here the author organize the search engine to climb the return code.
1 xx (temporary response) temporary response and need the requester to continue operating status code.
100 (continue) the requestor should continue to put forward the request.The server returns the first part of the "the code says it has received the request, the rest are waiting for.
101 switch (agreement) the requester has asked the server switching protocol, the server has been confirmed and ready to switch.
2 xx (success) successfully processed the request status code.200 (successful) server has been successfully processed the request.In general, this means that the server provides the requested page.
201 (created) request is successful and the server to create a new resource.
202 (accepted) server has accepted the request, but has not yet been processed.
203 (unauthorized) server has been successfully processed the request, but the returned information may come from another source.
204 (no content) server successfully processed the request, but did not return any content.
205 (reset) server successfully processed the request, but did not return any content.
206 (part) server successfully processed the partial GET request.
3 xx (redirect) to complete the request, need further operation.Usually, these status code used to redirect.
300 (multiple choice) according to the request, the server can perform a variety of operations.Server according to the requestor (user agent) choose an operation, or provide operation list for the requester to choose from.
301 (moved permanently) the requested page has moved permanently to a new location.The server returns the response (to GET or HEAD request response), will automatically transfer the requester to the new location.
302 move (temporary) server from different locations respond to the request of web pages, but the requestor should continue to use the original position for future requests.
303 (see other position) the requestor shall be to a different location using single GET request to retrieve the response, the server returns this code.
304 (unmodified) since the last request, the request of the unmodified web pages.When the server returns the response, will not return to the web page content.
305 (using a proxy) requesters can only use a proxy access request page.If the server returns the response, also said the requestor should use the proxy.
307 (temporary redirect) server from different locations respond to the request of web pages, but the requestor should continue to use the original position for future requests.
4 xx (request) said the status code request might be wrong, interferes with the server.Error
400 (request) server does not understand the grammar of the request.
401 (unauthorized) request to the authentication.To need to log in to the web server may return to this response.
403 (banned) server refused the request.
404 (not found) server can't find the requested page.Method
405 (disabled) disable the methods specified in the request.
406 (don't accept) will not be able to use content characteristics respond to the request of the request page.
407 (need proxy authorization) the status code 401 (unauthorized) are similar, but specify the requestor shall be authorized the use of the agent.
408 (request timeout) host waiting request timeout.
409 (conflict) server to complete your request.The server must contain information about the conflict in response.
410 (deleted) if the requested resource has been permanently removed, the server returns the response.
411 (effective length) server will not accept without effective content length request header field.
412 (did not meet the prerequisites) server does not meet the requestor in the one of the preconditions set in the request.
413 request entity too large the server cannot process the request, because the request entity is too large, beyond the server processing power.
414 (request URI is too long) the request URI (usually a url) is too long, the server can't handle.
415 (unsupported media type) request format is not supported by the requested page.
416 (request scope does not conform to the requirements) if the page can't provide the scope of the request, the server will return the status code.
417 (not meet expectations) server did not meet the requirements of "expectations" request header field.
5 xx (server) status code indicates that the server internal error occurred while trying to handle the request.These errors may be server itself error, error rather than request.
500 (server internal error) server encounters an error, unable to complete the request.
501 (not yet implemented) server does not have the function that complete the request.For example, the server can't identify the request method may return to this code.Error
502 (gateway) as a gateway or proxy server, received invalid response from upstream server.
503 (service unavailable) server is currently unavailable (due to overload or downtime).Usually, this is just a temporary state.
504 (gateway timeout) as a gateway or proxy server, but there is no timely received the request from the upstream server.
505 version is not supported (HTTP) server does not support the HTTP protocol version used in the request.
Second, the link site or other site drop right with space1, the link site is down right Delete this site with high industry relevancy in for a website2, with other site drop right of space Replace the independent space
Three, site contentOriginal degree is low, for a long time didn't update, is a collection or pseudo original content more, to improve the quality of content and updates
Fourth, the code too much influence on the speed of web page openUsing webmaster tools to remove too many tedious code within the station
Five, the site is mirroredThere are many website code without treatment in the form of an absolute address rivals often like to use this mirror their own websites are down.
Six, homepage are blockedSolution is aimed at google, this phenomenon directly amend the server host header index to other pages or amend the page file name rebuilt.
Seven, excessive optimizationSome friends to the site optimization of the degree of master is not very good, all the methods can be used, as a result not only ranking is bad, but counterproductive, specific how to grasp the degrees, not a constant, can only say that want to go through a large area of practice and summarizes some rules or techniques.
Eight, recent changes to the site three big labelsRecent changes to the home page title, keywords and description or often changes, etc.
Nine, page keywords heap from high densityThis kind of phenomenon is easy to search engines for cheating, but often some seor do not pay attention to, often appear the whole page appear to do keyword everywhere, in fact in the present is given priority to with the user experience of today we are going to do keyword layout to natural, don't go to inclination.
Ten, websites are hung horseThis kind of phenomenon also is common, so we should often watch your website snapshot, the home page source code and the change of collection to prevention.
Eleven, outside the chain, or suddenly dropped sharplyOutside the chain suddenly reduced a lot mainly because of the poor quality of the external connection of your site, search engine in the updated adjustment when the connection to your garbage connection and deleted, so in the future when we do outside the chain is higher for some correlation of connection.Practice outside the chain, please refer to the author article the most complete history resources, looking for a way outside the chain.Included decline in low degree of content quality your proposed under more kung fu on the content of the original.
Twelve, artificial interventionGenerally applies only to this phenomenon and some political words or super hot word, ordinary station by intervention rarely, unless you back luck.
thirteen, update the wrong causing the site to be rightIf your site does not big problem usually will soon be solved.Original author xiao-wei yao cut your chicken chicken does not indicate the copyright
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