Beernet: Building Self-Managing Decentralized Systems with Replicated Transactional Storage
International Journal of Adaptive, Resilient and Autonomic Systems
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PEPINO is a simple and effective peer-to-peer network inspector. It visualises not only meaningful pointers and connections between peers, but also the exchange of messages between them, providing a useful tool for debugging purposes. It can monitor running networks, simulate them and log them in order to reproduce interesting case scenarios. Failures can be explicitly introduced to study fault tolerant algorithms. The graphical representation of the network uses a physical model to attract or repel peers, allowing the user to study the system from different points of view. This demo aims to present the use of PEPINO in the development of a novel relaxed-ring topology for fault tolerant networks, where the representation of the ring based on predecessors may differ from the ring based on successors. We show how PEPINO is also useful for visualising other network topologies such as perfect ring or unstructured networks.