KNN-Based Consensus Algorithm for Better Service Level Agreement in Blockchain as a Service (BaaS) Systems

With services in cloud manufacturing expanding, cloud manufacturers increasingly use service level agreements (SLAs) to guarantee business processing cooperation between CSPs and CSCs (cloud service providers and cloud service consumers). Although blockchain and smart contract technologies are critical innovations in cloud computing, consensus algorithms in Blockchain as a Service (BaaS) systems often overlook the importance of SLAs. In fact, SLAs play a crucial role in establishing clear commitments between a service provider and a customer. There are currently no effective consensus algorithms that can monitor the SLA and provide service level priority. To address this issue, we propose a novel KNN-based consensus algorithm that classifies transactions based on their priority. Any factor that impacts the priority of the transaction can be used to calculate the distance in the KNN algorithm, including the SLA definition, the smart contract type, the CSC type, and the account type. This paper demonstrates the full functionality of the enhanced consensus algorithm. With this new method, the CSP in BaaS systems can provide improved services to the CSC. Experimental results obtained by adopting the enhanced consensus algorithm show that the SLA is better satisfied in the BaaS systems.

Automated summary

With the expansion of services in cloud manufacturing, service level agreements (SLAs) are increasingly used by cloud manufacturers to ensure business processing cooperation. However, consensus algorithms in Blockchain as a Service (BaaS) systems often overlook the importance of SLAs. To address this issue, a KNN-based consensus algorithm is proposed that classifies transactions based on their priority. The enhanced consensus algorithm improves the satisfaction of SLAs in BaaS systems, allowing cloud service providers to provide better services to cloud service consumers.