Evaluating the integration of Esper complex event processing engine and message brokers 1UCASE Software Engineering Research Group, Department of Computer Science and Engineering, University of Cádiz, Puerto Real, Spain 2VSYS Distributed Systems Research Group, Department of Computer Science, University of Hamburg, Hamburg, Germany 3Software Engineering Research Group, Department of Computer Architecture and Technology, University of Cádiz, Puerto Real, Spain DOI 10.7717/peerj-cs.1437...