@conference {2017:europlop,
	title = {A Pattern Language for Workflow Engine Conformance and Performance Benchmarking},
	booktitle = {22nd European Conference on Pattern Languages of Programs (EuroPLoP)},
	year = {2017},
	month = {July},
	publisher = {ACM},
	organization = {ACM},
	address = {Kloster Irsee, Germany},
	abstract = {Workflow engines are frequently used in the domains of business process management, service orchestration, and cloud computing, where they serve as middleware platforms for integrated business applications. Engines have a significant impact on the quality of service provided by hosted applications. Therefore, it is desirable to compare them and to select the most appropriate engine for a given task. To enable such a comparison, approaches for benchmarking workflow engines have emerged. Although these approaches deal with different quality attributes, i.e., performance or standard conformance, they face many reoccurring design and implementation problems, which have been solved in similar ways. In this paper, we present a pattern language that captures such common solutions to reoccurring problems (e.g., from test identification, benchmarking procedure validation, automatic engine interaction, and workflow execution observation) in the area of workflow engine conformance and performance benchmarking. Our aim is to help future benchmark authors with the pattern language presented in this paper to benefit from our experience with the design and implementation of workflow engine benchmarks and benchmarking tools},
	keywords = {BenchFlow, pattern language},
	doi = {10.1145/3147704.3147705},
	author = {Simon Harrer and J{\"o}rg Lenhard and Oliver Kopp and Vincenzo Ferme and Cesare Pautasso}
}
@conference {restalk:2016:europlop,
	title = {A Pattern Language for RESTful Conversations},
	booktitle = {Proceedings of the 21st European Conference on Pattern Languages of Programs (EuroPLoP)},
	year = {2016},
	month = {July},
	pages = {4:1{\textendash}4:22},
	publisher = {ACM},
	organization = {ACM},
	address = {Kloster Irsee, Germany},
	abstract = {As a good user interface design is important for the success of an app, so is a good API for the success of a Web service. Within the RESTful Web services community there is a need for a systematic approach in knowledge sharing, for which patterns are particularly suitable. Using a RESTful service to achieve a certain goal often requires multiple client-server interactions, i.e., to have a conversation. While patterns of such RESTful conversations can be uncovered from existing APIs{\textquoteright} usage scenarios, or the service engineering literature, they have never been gathered in a pattern language, nor properly visualized with a Domain Specific Modeling Language (DSML). These patterns provide valuable input for API designers, as well as API consumers, by establishing a common vocabulary to describe recurring conversations. To do so, this paper uses RESTalk, a DSML, to model the basic RESTful conversation patterns structured around the life cycle of a resource (create, discover, read, edit, delete, protect) by showing the corresponding sequences of HTTP request-response interactions. We show how the resulting pattern language can be applied to individual resources, or also collections of resources.},
	keywords = {conversation composition, conversation patterns, pattern language, RESTalk, RESTful conversation, RESTful web services},
	isbn = {978-1-4503-4074-8},
	doi = {10.1145/3011784.3011788},
	url = {http://doi.acm.org/10.1145/3011784.3011788},
	author = {Cesare Pautasso and Ana Ivanchikj and Silvia Schreier}
}
