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The in-memory cache system is a performance-critical layer in today’s web server architectures. Memcached is one of the most effective, representative, and prevalent among such systems. An important problem is on its memory allocation. The default design does not make the best use of the memory. It is unable to adapt when the demand changes, a problem known as slab calcification. This paper introduces...
Migrating workflow is a new workflow management pattern that migrating instance migrates in workplaces and completes one or more workflow tasks. The workflow task execution machine which is installed on the workplace has the responsibility of receiving the task delegation of migrating instance and completing one or more workflow tasks according to the task logic of delegation and the service rule...
This paper presents Byte-Map, which is a novel mobile map format for mobile map service in mobile devices. Byte-Map is a kind of vector format with different blocks through different levels, and map data of Byte-Map is encapsulated in binary stream. The basic cell of Byte-Map is a block, which is fixed in size of 255 units*255 units according to different coordinates systems and thus the coordinates...
This paper presents LBS-p, a LBS supporting platform, which provides online map service. LBS-p consists of LBS-p Mobile and LBS-p Server. LBS-p Mobile is a Java ME application running on the mobile terminal, which dedicates to the request, management and display of mobile map data. LBS-p Server consists of data pre-processing mechanism, data providing module and LBS-oriented GIS service module. Performance...
In virtual machine (VM) systems, with the increase in the number of VMs and the demands of applications, the main memory is becoming a bottleneck of application performance. To improve paging performance for memory-intensive or I/O-intensive workloads, we propose the hypervisor remote disk cache (REMOCA), which allows a virtual machine to use the memory resources on other physical machines as its...
Collaboration is becoming more and more important than before. Many fields including education and business can benefit from the visual collaboration. We already have many picture media sharing applications on the web, but the most natural media format organizing the information is the web page, but till now, there is no a very well-known application offering pure web page sharing without installing...
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