Efficient Information Flow Control by Reducing Meaningless Messages in P2PPSO Systems
- 1.1k Downloads
In topic-based publish/subscribe (PS) model, each peer process (peer) only receives an event message whose publication topics include some common topic with the subscription topics. In a P2PPSO (P2P (peer-to-peer) type of topic-based PS with Object concept) model, each peer exchanges objects by publishing and receiving event messages with no centralized coordinator. Here, objects are denoted by topics and event messages are characterized by topics of the objects carried by the event messages. Suppose an event message \(e_j\) published by a peer \(p_j\) carries objects on some topics into a target peer \(p_i\). Here, objects in the peer \(p_j\) illegally flow to the peer \(p_i\) if the peer \(p_i\) is not allowed to subscribe the topics. An object of a peer \(p_i\) is illegal, whose topics the peer \(p_i\) is not allowed to subscribe. In this paper, we newly propose an ETOBSCO (Efficient TOBSCO) protocol where meaningless event messages are not published to reduce the number of event messages exchanged among peers. In the evaluation, we show the fewer number of event messages are delivered but longer update delay time to update replicas is taken in the ETOBSCO protocol.
KeywordsCausally ordering delivery Information flow control P2P (peer-to-peer) PS (publish/subscribe) model TBAC (topic-based access control) model
This work was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Numbers JP15H0295, JP17J00106.
- 1.Google alert. http://www.google.com/alerts. Accessed 1 Aug 2018
- 4.Fernandez, E.B., Summers, R.C., Wood, C.: Database Security and Integrity. Adison Wesley, Boston (1980)Google Scholar
- 6.Nakamura, A., Takizawa, M.: Causally ordering broadcast protocol. In: Proceedings of IEEE the 14th International Conference on Distributed Computing Systems, pp. 48–55 (1994)Google Scholar
- 7.Nakamura, S., Enokido, T., Takizawa, M.: Information flow control in object-based peer-to-peer publish/subscribe systems. Concurrency and Computation: Practice and Experience (accepted)Google Scholar
- 11.Setty, V., Steen, M.V., Vitenberg, R., Voulgaris, S.: Poldercast: fast, robust, and scalable architecture for P2P topic-based pub/sub. In: Proceedings of ACM/IFIP/USENIX 13th International Conference on Middleware, pp. 271–291 (2012)Google Scholar