Receiving individual documents to serve

One or more computer storage media storing computer-useable instructions that, when used by one or more computing devices, cause the one or more computing devices to perform a method, the method comprising:

• receiving one or more documents that are available from a document provider, wherein each document is any web document;
• assigning each document to a document distributor having a plurality of document servers associated therewith, wherein the plurality of document servers receive documents only from the associated document distributor;
• identifying that one of the plurality of document servers is failing;
• reassigning the failing document server's responsibilities to a replacement document server;
• and
• updating the replacement document server such that it is identical to each document server in the plurality of document servers.

One or more computer storage media storing computer-useable instructions that, when used by one or more computing devices, cause the one or more computing devices to perform a method, the method comprising:

• receiving a document associated with a first document identifier;
• associating the document with a second document identifier;
• receiving an indication that the document is to be modified, wherein the indication includes the first document identifier;
• mapping the first document identifier to the second document identifier associated with the document such that the document is identified;
• individually modifying the document;
• associating the document's second document identifier with an indication that the document is not available to be served to a user;
• receiving a search query input from the user;
• and
• filtering the second document identifier from a plurality of identifiers associated with documents that are available to serve to the user.