The industrial Internet of Things (IIoT) and supply chain systems have become one of the most important technologies to positively impact our daily life activities. Blockchain technology has recently gained popularity and it is increasingly being employed in a large number of applications and industries. The use cases for blockchain are growing rapidly in different fields and domains. Combining blockchain into IIoT and in our supply chain logistics could provide many solutions to the critical issues that current systems face today. Blockchain features such as immutability, decentralization, and data encryption are useful in solving the shortcomings of IIoT and the current supply chain systems security and integrity. This article presents a comprehensive review of blockchain applications in IIoT and supply chain systems. This article also focuses on the security aspects of blockchain integration within industry applications with the support of the emerging edge computing technology.

Traditional solutions that use servers or computers to deploy on-site are bulky and costly. The edge computing system can be deployed in a lightweight and flexible manner according to the actual needs of the site, so as to achieve the lowest cost while meeting the functional requirements. Based on this, this article proposes an edge computing system solution based on microservice architecture, discusses the overall framework of the system and the implementation of microservice architecture in edge computing systems, and introduces in detail an edge computing gateway device deployment method based on the Gaussian mixture model, which can optimize the number of deployed gateway devices while ensuring the load balance of each gateway device. Finally, the advantages of the deployment method are verified through experiments.