Is Stripe starting to use JAVA more for new services or most of the new work is still done in ruby?
New services are all Java based. Although existing Ruby service is like a relay to the new service so even new service needs to write small amount of Ruby code as well.
Brand new services are almost certainly written in Java these days. But there's still a lot of "new work" that is built on existing frameworks and that's probably more Ruby still but not by a huge margin
Thank you. And what framework are they using for java applications? Is it spring boot?