@Article{2019.100000159,
AUTHOR = {Abid Nisar, Waheed Iqbal, Fawaz Bokhari, Faisal Bukhari, Khaled Almustafa},
TITLE = {Dynamic Horizontal and Vertical Scaling for Multi-tier Web Applications},
JOURNAL = {Intelligent Automation \& Soft Computing},
VOLUME = {26},
YEAR = {2020},
NUMBER = {2},
PAGES = {353--365},
URL = {http://www.techscience.com/iasc/v26n2/39949},
ISSN = {2326-005X},
ABSTRACT = {The adaptive resource provisioning of cloud-hosted applications is enabled to 
provide a better quality of services to the users of applications. Most of the 
cloud-hosted applications follow the multi-tier architecture model. However, it is 
challenging to adaptively provision the resources of multi-tier applications. In 
this paper, we propose an auto-scaling method to dynamically scale resources 
for multi-tier web applications. The proposed method exploits the horizontal 
scaling at the web server tier and vertical scaling at the database tier 
dynamically to maintain response time guarantees. We evaluated our proposed 
method on Amazon Web Services using a real web application. The extensive 
experimental results show the effectiveness of our proposed method in terms of 
performance and cost when compared with current practices of static and 
dynamic resources over-provisioning methods.},
DOI = {10.31209/2019.100000159}
}