DiagnosticServlet: Experimental utilities (DiagnosticServlet and DiagnosticInterceptor) for tests and diagnostics.
DiagnosticServlet
Experimental and simple custom servlet which enables setting component’s communication id’s. This will help one to write scalability tests for Vaadin with e.g JMeter or Gatling.
For VAADIN 8.1 use ConnectorIdGenerator add-on instead
See the following wiki articles for more information about the scalability testing:
http://bit.do/vaadin-gatling
http://bit.do/vaadin-jmeter
Caution! Use unique ids for components!
DiagnosticInterceptor
Server-side interceptor for recording Push WebSocket communication. You can use recorded requests e.g. for scalability testing a Vaadin application with JMeter. See also (GitHub - johannest/JMeter-WebSocketSampler: JMeter - WebSocket Sampler) for a customized WebSocketSampler plugin for JMeter.