1. Peter, M., Grance, T.: The NIST definition of cloud computing. NIST special publication 800.145 7, 1–3 (2011)
2. Xuxu, Z., Qingzhong, L., Lanju, K.: A data storage architecture supporting multi-level customization for SaaS. In: IEEE 7th International Conference on Web Information Systems and Applications (WISA), pp. 106–109 (2010)
3. Dormando.: Memcached. In: Internet. www.memcached.org . Accessed on 6 March 2015
4. Pierre, Guillaume, Tanenbaum, A.S.: Differentiated strategies for replicating web documents. Elsevier. Comput. Commun. 24(2), 232–240 (2001)
5. Guillaume, P., Van Steen, M., Tanenbaum, A.S.: Dynamically selecting optimal distribution strategies for web documents. IEEE Trans. Comput. 51(6), 637–651 (2002)