Abstract: Methods and systems for quickly serving documents are provided. Documents may be served to users, for example, in response to search query inputs. Documents may be individually communicated to a document server prior to batching the documents. By individually communicating documents to document servers, the document experiences sub-second latency before it is available to a user. The documents may also be modified individually such that real-time serving is not interrupted.

Abstract: Methods and systems for quickly serving documents are provided. Documents may be served to users, for example, in response to search query inputs. Documents may be individually communicated to a document server prior to batching the documents. By individually communicating documents to document servers, the document experiences sub-second latency before it is available to a user. The documents may also be modified individually such that real-time serving is not interrupted.

Abstract: Systems, methods, and computer storage media for performing a structured search using metadata in a search index. A search index is augmented with meta words that are traditionally not found in the documents indexed. Documents to be indexed in the search index are analyzed to determine if a meta word that has a logical relationship to the document should be associated and then stored in the index along with metadata. In some embodiments the metadata is attribute metadata and document identification metadata. Query operators are then provided to aid in performing a structured search of the search index. In some embodiments s structured search request is received and parsed into nodes which is then utilized to search a search index. In some embodiments, the results of the search index are merged, duplicates removed, and sorted when presented.

Abstract: An index of a search engine includes two portions: a long-term portion that is optimized for lookup performance and is stored in bulk storage, for example, non-volatile memory, and a short-term portion that is easily updatable and is stored solely or primarily in random access memory (RAM). Both portions of the index are searchable. The vast majority of documents in the location space are indexed in the long-term portion in a format optimized for lookup, while new documents are immediately searchable in the easily updatable short-term portion, which has a different format. The long-term portion is updated with indexing information of the short-term portion.