Abstract
Application performance is crucial for end user satisfaction. It has therefore been proposed to benchmark new software releases as part of the build process. While this can easily be done for system classes which come with a standard interface, e.g., database or messaging systems, benchmarking microservice applications is hard because each application requires its own custom benchmark and benchmark implementation due to interface heterogeneity. Furthermore, even minor interface changes will easily break an existing benchmark implementation. In previous work, we proposed a benchmarking approach for single microservices: Assuming a REST-based microservice interface, developers describe the benchmark workload based on abstract interaction patterns. At runtime, our approach uses an interface description such as the OpenAPI specification to automatically resolve and bind the workload patterns to the concrete endpoint before executing the benchmark and collecting results. In this extended paper, we enhance our approach with the capabilities necessary for benchmarking entire microservice applications, especially the ability to resolve complex data dependencies across microservice endpoints. We evaluate our approach through our proof-of-concept prototype OpenISBT and demonstrate that it can be used to benchmark an open source microservice application with little manual effort.
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