Client Side Caching For Client Server Olap Systems
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Client Side Caching For Client Server Olap Systems
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Author : Elaheh Kamaliha
language : en
Publisher:
Release Date : 2013
Client Side Caching For Client Server Olap Systems written by Elaheh Kamaliha and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Cache memory categories.
Recently, client-side data caching has become popular for building highly interactive web applications. This research is about client-side data caching in a client-server OLAP system. Contrary to the traditional OLAP systems, the system we study here is client-centric which contains a light-weight OLAP engine and a data cache, such that queries posed by the user may be processed on the client without a round-trip to the server. It has been shown that this system works better than the traditional ones in some data visualization scenarios. In this study, we focus on the client-side data caching in this system. We implemented a new data structure for storing multidimensional data on the client-side, which occupies a small memory footprint and decreases the load time significantly with a minimal client-side processing overhead. Also, we investigate the efficiency of client-side caching when the processing of the query needs extra data that are not already client-resident. Our results show that in some cases it could be cost-effective to download more than 80% of the required data from the server, rather than to download the entire sub-cube from the server.
Caching And Materialization For Web Databases
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Author : Alexandros Labrinidis
language : en
Publisher: Now Publishers Inc
Release Date : 2010-02-19
Caching And Materialization For Web Databases written by Alexandros Labrinidis and has been published by Now Publishers Inc this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-02-19 with Computers categories.
Database systems have been driving dynamic web sites since the early 90s; nowadays, even seemingly static web sites employ a database back-end for personalization and advertising purposes. In order to keep up with the high demand fuelled by the rapid growth of the Internet, a number of caching and materialization techniques have been proposed for web databases over the years. The main goal of these techniques is to improve performance, scalability, and manageability of database-driven dynamic web sites, in a way that the quality of data is not compromised. Although caching and materialization are well understood concepts in the traditional database and networking/operating systems literature, the Web and web databases bring forth unique characteristics that warrant new techniques and approaches. In this survey, we adopt a data management point of view to describe the system architectures of web databases, and analyze the research issues related to caching and materialization in such architectures. We also present the state of the art in caching and materialization for web databases and organize current approaches according to the fundamental questions, namely how to store, how to use, and how to maintain cached/materialized web data. Finally, we associate work in caching and materialization for web databases to similar techniques in other related areas, such as data warehousing, distributed systems, and distributed databases.
Maintaining Consistency In Client Server Database Systems With Client Side Caching
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Author : Fahren Bukhari
language : en
Publisher:
Release Date : 2012
Maintaining Consistency In Client Server Database Systems With Client Side Caching written by Fahren Bukhari and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Associative Caching In Client Server Databases
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Author : Julie Basu
language : en
Publisher:
Release Date : 1998
Associative Caching In Client Server Databases written by Julie Basu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Cache memory categories.
We first describe the architecture of A*Cache and its transaction execution model. We then develop new optimization techniques for improving the performance of A*Cache. Next, A*Cache performance is investigated through detailed simulation of a client-server database under many different workloads, and compared with other types of caching systems. The simulation results clearly demonstrate the effectiveness of our associative caching scheme for read-only environments, and also for read-write scenarios with moderately high data update probabilities.
Hash Based Caching Mechanism For Web Olap
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Author : Bai Yu
language : en
Publisher:
Release Date : 2014
Hash Based Caching Mechanism For Web Olap written by Bai Yu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
In recent years, the advent of client-side data caching techniques has brought significant performance improvement in highly interactive web applications. In this thesis, we focus on the client-side data caching mechanism in the web-based OLAP system. Previous work or methods on this area lack the universality of dealing arbitrary shapes of the cached data. For instance, in 2 dimensional data, it can only calculate the overlaps between two rectangles. While in reality, in most cases, the cached data can be any sizes and shapes. Therefore, we propose a new client-side hash based caching mechanism that can deal with arbitrary shapes of the dataset. Also, we come up with the idea of downloading the inflated sub-cubes in background and serve the users first. By combining this idea with our hash based caching mechanism, we can not only serve the users at the very first time, but also provide high performance for the subsequent cross-tab or drill-down operations by utilizing the cached inflated sub-cubes. Our result shows that this new method has great performance improvement compared with the previous method and when the size of the inflated sub-cubes is not so large, our mechanism also outperforms the no-cached one.
Client Data Caching
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Author : Michael J Franklin
language : en
Publisher:
Release Date : 1996-03-31
Client Data Caching written by Michael J Franklin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-03-31 with categories.
Performance Analysis Of An Associative Caching Scheme For Client Server Databases
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Author : Stanford University. Computer Science Department
language : en
Publisher:
Release Date : 1997
Performance Analysis Of An Associative Caching Scheme For Client Server Databases written by Stanford University. Computer Science Department and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
This paper presents a detailed performance study of the associative caching scheme proposed in "A Predicate-based Caching Scheme for Client-Server Database Architectures," The VLDB Journal, Jan 1996. A client cache dynamically loads query results in the course of transaction execution, and formulates a description of its current contents. Predicate-based reasoning is used on the cache description to examine and maintain the cache. The benefits of the scheme include local evaluation of associative queries, at the cost of maintaining the cached query results through update notifications >From the server. In this paper, we investigate through detailed simulation the behavior of this caching scheme for a client-server database under different workloads and contention profiles. An optimized version of our basic caching scheme is also proposed and studied. We examine both read-only and update transactions, with the effect of updates on the caching performance as our primary focus. Using an extended version of a standard database benchmark, we identify scenarios where these caching schemes improve the system performance and scalability, as compared to systems without client-side caching. Our results demonstrate that associative caching can be beneficial even for moderately high update activity.
Caching And Memory Management In Client Server Database Systems
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Author : Michael J. Franklin
language : en
Publisher:
Release Date : 1993
Caching And Memory Management In Client Server Database Systems written by Michael J. Franklin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Database management categories.
Both extensions are shown to be simple and effective ways to reduce dependence on server disk and cpu resources."
Client Server Performance Tuning
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Author : Sid Wise
language : en
Publisher: McGraw-Hill Companies
Release Date : 1997
Client Server Performance Tuning written by Sid Wise and has been published by McGraw-Hill Companies this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Computers categories.
Network services expert Sid Wise offers a systems-tuning solution that really delivers. The book provides a practical program for measuring losses--finding the roots of poor performance--and recovering productivity by specifically targeting operating environments and applications architectures. Easy to read, the guide is based on real life scenarios. Coverage includes UNIX, MVS, Windows NT, and OS/2 environments.
Client Side Consistency Mechanisms And Security Provisions For Cache Deployment In Manets
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Author : Kassem Mohammad Fawaz
language : en
Publisher:
Release Date : 2011
Client Side Consistency Mechanisms And Security Provisions For Cache Deployment In Manets written by Kassem Mohammad Fawaz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Caché (Computer file) categories.
This work proposes a client-based cache consistency scheme that is implemented on top of a previously proposed architecture for caching data items in MANETs that caches submitted queries in special nodes, called query directories (QDs), and uses them to locate the data (responses) that are stored in the nodes that requested them, called caching nodes (CNs). In this work, we introduce a totally client-based scheme that is termed DCIM which works by having the QD nodes monitor the TTL values of the cached data items and estimate update patterns on the server to adapt the TTL values accordingly. The QDs also monitor the request rates for data items and decide accordingly which items to prefetch. DCIM is analyzed to assess the delay and bandwidth gains (or costs) when compared to polling every time, and was also simulated along with two other client based schemes to assess its performance experimentally. The consistency ratio, delay, and overhead traffic are reported versus several variables, and DCIM shows to be superior when compared to existing systems.--Furthermore, DCIM is extended to handle multiple replicas inside the MANET. For this purpose, it utilizes a push based approach to propagate updates to replicas inside the network. The result is a hybrid approach that utilizes the benefits of pull approaches for client server communication, and the benefits of push approaches inside the network between the replicas. This method is analyzed mathematically, and the optimal number of replicas is obtained. It is concluded that full replication at the QDs and partial replication at the CNs is optimal. This finding is used to design the replica allocation scheme using a cost minimization model that enhances the operation of DCIM in terms of access delay and data hit rate. At the end, we provide a security analysis for the operations of the proposed system.