Distributed PEP–PDP Architecture for Cloud Databases

Abstract

Cloud computing allows accessing data from anywhere; Cloud databases play an important role in storing requests for access management. These requests require authorization management which has become a crucial area in access control. The request-response paradigm plays an important role in the PEP–PDP architecture. Many applications are available in literature based on the centralized PEP–PDP architecture. In this architecture, performance degrades with the increase in requests. Failure of PDP increases while handling requests from multiple PEPs. The proposed work extends the existing centralized PEP–PDP architecture to distributed architecture with PEP side caching to achieve scalability. In the proposed architecture, all PEPs employ side caching to improve efficiency. Various simulations and validation checks are performed to validate the architecture. Simulation results show proposed architecture is significantly efficient in handling large requests in contrast to existing single PEP-PDP and multiple PEP-single PEP architectures.