For my current project I will have a REST API set up with Spring Boot. To be able to use the API endpoint the application will check that the incoming request has a valid JWT token.
This rather long, but extremely well-researched article by Kai Wähner is a follow-up and update to his previous article "Microservices and whether that spells the death of the Enterprise Service Bus and other middleware." In this piece, he discusses how relevant microservices, containers, and a cloud-native architecture is for middleware. Take the time and read this... it's well worth it!
Sometimes, it might be worth squeezing few more milliseconds from your Camel routes. Here are some ideas for tuning Camel based systems, which may apply for you.
A brilliant from-the-start introduction to using Spring Boot on Docker. This article even takes you through what Docker is so you've no excuse not to give it a whirl.
IBM Websphere Liberty comes with great out of the box support for Swagger, including their own branded Swagger UI. You might, however, want to create your own branded UI.
There are a lot of parallels between the Internet Of Things and Microservices. One of the big battles in the design is the granularity of each service and the impact that can have on interdependency and network costs.