Management of SOA-Based Context-Aware Applications Hosted in a Distributed Cloud Subject to Percentile Constraints

Management of Context-Aware Software Resources Deployed in a Cloud Environment For Improving Quality of Mobile Cloud Services

“…Boloor et al have investigated a research regarding the scheduling and dynamic allocating of requests to manage the context-aware software in the cloud distributed environment [4][5][6]. In this study, the cloud distributed environment is modeled as several data centers.…”

“…In this study, the cloud distributed environment is modeled as several data centers. An attempt is made to reduce the overall penalties charged to the cloud through proposing Data-aware Session-grained Allocation with gi-FIFO Scheduling (DSAgS), a novel decentralized request management scheme deployed in each of the geographically distributed datacenters, context cache replacement policies to be applied at the time of loading new context data to replace the prior contexts when the cache is full and considering the service level agreements aiming at saving time [4][5][6]. [12] have proposed a new mechanism of cache management in the cloud environment to manage the context-aware software.…”

“…Context aware services utilize context to adapt themselves to their changing environment. The response time of a request for a context aware application involves context provisioning, context provider lookup times and time required to load context information on the chosen end server [4,5,12]. Therefore, the speed of context-aware software would be reduced during execution times in the cloud computing environment.…”

“…A context-aware service continually collects the context of the environment and adapts its operation to the context data. When a request is sent by a customer to the context-aware software in the cloud computing distributed environment, the response to the request of context-aware software is affected by loading extensive context data from multiple resources on the chosen server [4,5]. Therefore the performance of such software would be decreased during execution.…”

“…Meeting service level agreement and decreasing managing costs of resource are important Challenges for Cloud providers. If cloud providers either fail to meet the objectives set in the agreements or provide services of lower qualities to customers than what agreed upon, they would be penalized by claiming them the costs or through recharging their accounts [1,5], which results in reduction of the total profit earned by the cloud providers.…”