This article describes how to create Spring Boot application with oauth2 authorization using password grant type. This grant type is appropriate for internal clients which we trust to get username and password from the user, like for example internal web UI or native mobile app.

Thinking about new application architecture with Spring Cloud with Netflix OSS I’ve stuck on a problem of time you need to wait until the Ribbon client is ready to serve. It looks by default you need to wait 30s before server list is fetched from Eureka server and Ribbon load balancer can be used to route traffic to specific service. This is a pain in dev env because here we frequently need to restart services and test some results again and again. 30s is not an option, so I’ve been looking for decreasing this time what finally turned out to be a difficult thing.

Today I was playing a little about Play Framework. This is very nice lightweight application framework for Java and Scala. I was trying to make an app and deploy to Heroku, which is a PaaS platform where you can host you Play applications for free (with some limitations of course).