Dissertation > Excellent graduate degree dissertation topics show

Research on Web Cache Technology

Author: MeiGaoYong
Tutor: YuanJingBo
School: Northeastern University
Course: Applied Computer Technology
Keywords: Web Cache Consistency Cache Prefetch Adaptive Replacement Strategy
CLC: TP333
Type: Master's thesis
Year: 2009
Downloads: 74
Quote: 1
Read: Download Dissertation

Abstract


With the rapid growth of the size of information and users on the internet, it becomes more and more urgent and difficult to effectively reduce the user access latency time, and improve network service quality and network bandwidth utilities. Proxy caching technology of web is the most effective way to overcome these problems. This thesis analyses and researches in depth on the cache replacement strategy, cache consistency technology and prefetching technology. On the basis of previous analysis, this thesis focuses on research and improvement of prefetching technology.First of all, this thesis introduces performance problems Internet confronts and solutions to them, and then elaborate the basic concept and theory of proxy caching technology of web, prefetching techniques and the cache replacement strategy. Next, this thesis also classifies related research results, points out the things need to improve, which lays the foundation for further research.Secondly, based on analysis of trajectory documents, this thesis propose a new strategy to improve LRU, which not only considering the average quote time, the recent time lapse, document type and size, and file age, but also considering the dynamically changing features of access rate.Thirdly, at the cache consistency strategy, this thesis improves volume lease updating mechanism and TTL mechanism. The new TTL mechanism overcome the shortcomings of TTL mechanism by the return of a series of versions of requested web pages and improve the calculation of time lapse and allow customers to specify the old degree that the request have to meet. Volume lease mechanism is fully taken into account the different changes of the data objects and network resources, and specifies different expiry dates respectively. Volume lease mechanism maintains the consistency of object more accurately.Finally, prefetching threshold algorithm is improved. Based on comprehensive consideration of network performance and Web server capacity, this thesis proposes threshold factors. The improved threshold algorithm dynamicly predict prefetch threshold of web page prefetching algorithm base on user access path analysis. Experiment illustrates that after dynamically prefetching a threshold, performance of the new algorithm has been greatly improved.

Related Dissertations

  1. Research on the Cache and Query Technology in Wide Area Sensor Databases,TP311.13
  2. A Study of Software/Hardware Cooperative Prefetch Technique,TP302
  3. Adaptive multi-application environment prefetching Strategy,TP333
  4. Cache prediction technology research,TP332
  5. The Research and Implementation of Energy-efficient RAID,TP333
  6. Packet-based disk array cache optimization technology research and implementation,TP333
  7. Adaptive multi-application environment prefetching Strategy,TP333
  8. Research and Implementation of the Parallel Storage System Based on NAND FLASH,TP333
  9. New embedded memory module study,TP333
  10. Low Power SRAM Design Based on Data Retention Voltage (DRV) Scheme,TP333
  11. Embedded flash memory testing technology,TP333
  12. Applied to the gain cell embedded dynamic random access memory adaptive dynamic refresh and write voltage adjustment programs,TP333
  13. The embedded gain cell memory design for data access rate and resistance to soft errors capacity research,TP333
  14. For low-power radio-frequency identification tag of a memory circuit,TP333
  15. Gain unit based on the high - speed low data maintain power consumption eDRAM design,TP333
  16. Research and Implementation of Memory Driver Module Referencing AUTOSAR,TP333
  17. Miniature mobile storage for desktop Linux System Research and Implementation,TP333.2
  18. Hard security access control Research and Implementation,TP333.35
  19. Study of Mass Storage Security System Framework and Fast Location Algorithm,TP333
  20. Performance Optimization and Application of Storage Area Network under the Online Transaction Processing,TP333
  21. Cloud storage system for mass data,TP333
  22. Adaptive Dynamic Address Remapping in PCM-based Hybrid Memory System,TP333

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Electronic digital computer (not a continuous role in computer ) > Memory
© 2012 www.DissertationTopic.Net  Mobile