This article looks at an HTTP load balancer in Mongoose. This is a fairly advanced example that will showcase Mongoose usage as both a server and a client.
Replication and sharding can both be helpful in providing for these needs. Whether your database is in need of one, the other, or both, it is helpful to know what each of these does.
JMeter allows you to perform several important tests surrounding application performance and load. Find out how to extend JMeter via plugins using the Plugins Manager.
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.