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Within Content Delivery Networks (CDNs), users are typically geographically load-balanced across multiple servers in order to provide better performance and locality – users are assigned to the content servers close to them. One approach to user-server assignment is the use of IP anycast, where all the content servers use the same IP address. A user request is then routed to the server closest to...
Current Content Delivery Networks (CDNs) primarily utilize the Domain Name System (DNS) to direct users towards optimal content replica servers. Typically, these CDNs will leverage specialized DNS servers to perform load balancing, by providing different users with different IP endpoints for a particular hostname. However, there typically exists some form of DNS cache between the user and the authoritative...
Recently, Wireless Mesh Networks (WMNs) have attracted much of interest from both academia and industry, due to their potential to provide an alternative broadband wireless Internet connectivity. However, due to different reasons such as multi-hop forwarding and the dynamic wireless link characteristics, the performance of current WMNs is rather low when clients are soliciting Web contents. Due to...
Content replication and placement is an effective technique to improve data availability and enhancing network performance. This area received attention in Content Delivery Networks (CDNs), but is less explored by the research community in Wireless Mesh Networks (WMNs). A number of replica placement algorithms were specifically designed for CDNs, but they do not consider the special features of wireless...
Content replication and placement is an area that has been well explored in the scope of Content Delivery Networks (CDNs), but has received relatively less attention from the research community when it comes to Wireless Mesh Networks (WMNs). There are a number of Replica Placement Algorithms (RPAs) that are specifically designed for CDNs. But they do not consider the special features of wireless networks...
As an emerging portable service platform, OSGi (Open Service Gateway Initiative) is taking a more and more important role in modern Service Oriented Architectures (SOA). In order to improve the capability of using distributed services in network-based OSGi applications, R-OSGi (Remote OSGi) is invented. However, network-based SOA applications are prone to the big impact on Quality of Service (QoS)...
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