Version storage in collaborative design system based on circular linked list

In the process of collaborative design, a large number of versions are produced. Storing and accessing versions is very frequent, so version storage in the process of collaborative design has become the core issue of version management. In recent years, how to reduce the storage space and improve the retrieval efficiency has become a research hotspot, however the research of version security is still in its infancy. This paper proposes a model of version storage based on circular linked list, depicts the construction algorithm of the model and analyzes the strategy of version resumption and version security. The model combines the full storage, difference storage and positive difference storage, which reduces the space of version storage, improves the access speed, and ensures that any version can be resumed once lost, which improves the security of the model.