Opera: Scalable Simulator for Distributed Systems

Opera is a scalable local simulation network for experimental researches on distributed systems. To the best of our knowledge, it is the first Java-based event-driven simulator for distributed systems with a modular network, induced churn and latency traces from real-world systems, full life cycle management of the nodes, and production-grade simulation monitoring. In this demo paper, we present the key features of Opera, its software architecture, as well as a sample demo scenario.