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Adjustment and optimization of applications is an important stage throughout the software life cycle. Based on the database system coming into running applications, SQL statements on the optimization algorithms and improving the application efficiency have become an important goal. In this paper, based on the ORACLE database management system and the optimization goals, the methods and techniques...
Network coding is known to provide increased throughput and reduced delay for communications over networks. In this paper we propose a peer-to-peer video streaming system that exploits network coding in order to achieve low start-up delay, high streaming rate, and high resiliency to peers' dynamics. In particular, we introduce the concept of random multicast trees as overlay topology. This topology...
Node clustering is an effective solution for achieving good performance and high reliability for peer-to-peer (P2P) systems. To improve the performance of a clustered P2P system, it is important to balance the service load among the clusters in the system. In this paper, we describe a diffusive load balancing scheme for clustered P2P systems, which dynamically adjusts the size of the clusters, by...
With the rapid growth of requirements on satellite remote sensing image data, effective management and efficient publication of increasingly large image data has become an urgent problem. Based on the features of massive image data and Web publication, this paper does a deep research and a thorough discussion on multi-resolution pyramid model of global satellite remote sensing images, gives a reasonable...
CDN (Content Delivery Network) and P2P (Peer-to-Peer) are two dominant technologies in large-scale content distribution. However, they have their own advantages and disadvantages. In this paper, an efficient hierarchical content distribution scheme is proposed, integrating the traditional CDN and centralized P2P. In our approach, content distribution is divided into two stages. In the CDN-level core...
We minimizes fingerprint management overhead (index lookup and index insert) via introducing main memory index lookup structure and workload-aware index partitioning of the index file in the storage. Backup server maintains three data structures for redundancy elimination: Header files, chunk files and fingerprint tables. These data structures altogether enables PRUNE to effectively eliminate redundancy...
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