Hi, we at a Gaston-Schul have a Vaadin 14 and bnd / low level OSGi application running in production for about half a year now. Basically it builds on the Vaadin OSGi example, service discovery is low level OSGi though. It consists just of one big bundle, modularity is in research. I accomplished deeper OSGi integration with Vaadin 8 using only Java side development, on Vaadin flow with polymer this seems not possible due to having to embed all web components in every bundle added to the front end.
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