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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...
Nowadays many software services are hosted in the Cloud. When there are more requests on these services, there are also more queries sent to the underlying database. In order to keep up with the increasing workload, it is necessary to have multiple servers hosting the data. Some cloud providers offer the full data replication solution. However, this solution only works when the load mainly consists...
In this paper, we investigate selection strategies for rescue servers in a fully collaborative in which heterogeneous systems share spare resource to address hotspot problems experienced by individual members. Different from content replication, delays due to application replication and startup time of the resulting rescue servers will be taken into consideration. Details about our replication strategy,...
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