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 individually prior to batching the documents. In such a real-time serving system, serving components may fail. To ensure real-time serving despite the failure, spares are utilized to replace the failing serving components such that the spare can immediately begin receiving documents. The spare can also be synchronized with other serving components to obtain the memory of the failing serving component prior to the failure.

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 individually prior to batching the documents. In such a real-time serving system, serving components may fail. To ensure real-time serving despite the failure, spares are utilized to replace the failing serving components such that the spare can immediately begin receiving documents. The spare can also be synchronized with other serving components to obtain the memory of the failing serving component prior to the failure.

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, systems, and media are provided for an optimized search engine index. The optimized index is formed by merging small lower level indexes of fresh documents together into a hierarchical cluster of multiple higher level indexes. The optimized index of fresh documents is formed via a single threaded process, while a fresh index serving platform concurrently serves fresh queries. The hierarchy of higher level indexes is formed by merging lower and/or higher level indexes with similar expiration times together. Therefore, as some indexes expire, the remaining un-expired indexes can be re-used and merged with new incoming indexes. The single threaded process provides fast serving of fresh documents, while also providing time to integrate the fresh indexes into a long term primary search engine index, prior to expiring.

Abstract: Methods, systems, and media are provided for an optimized search engine index. The optimized index is formed by merging small lower level indexes of fresh documents together into a hierarchical cluster of multiple higher level indexes. The optimized index of fresh documents is formed via a single threaded process, while a fresh index serving platform concurrently serves fresh queries. The hierarchy of higher level indexes is formed by merging lower and/or higher level indexes with similar expiration times together. Therefore, as some indexes expire, the remaining un-expired indexes can be re-used and merged with new incoming indexes. The single threaded process provides fast serving of fresh documents, while also providing time to integrate the fresh indexes into a long term primary search engine index, prior to expiring.

Abstract: A novel copolymer of an unsaturated acidic reactant and an atactic vinyl terminated propene polymer (VTPP) and its use in preparation of fuel and lubricant additives is taught. The VTPP has a major amount of polymer chains containing terminal vinyl unsaturation, a number average molecular weight of at least 500, and comprises at least 70 weight per cent propene and 0 to 30 weight per cent of at least one olefin selected from the group consisting of C.sub.2 and C.sub.4 to C.sub.10 olefins. The unsaturated acidic reactant comprises at least one unsaturated C.sub.4 to C.sub.10 carboxylic or dicarboxylic acid or anhydride. An oil soluble dispersant additive of the invention useful in oleaginous compositions is prepared by contacting the atactic VTPP copolymer with at least one nucleophilic reagent selected from the group consisting of amines, alcohols, metal reactants and mixtures thereof under conditions effective to form adducts of the nucleophilic reagent with the copolymer.