We are using Spring boot 2.1.6 for now, and manuly upgrade embed tomcat to 9.0.50. And face some issue in http2 environment, I think it`s likely to be a tomcat issue, I reported here. And I open this issue just to inform and see if someone can help address that.
Comment From: wilkinsona
Thanks for letting us know but there's no need to duplicate a Tomcat issue here. We'll upgrade to any new Tomcat 9.0.x release in due course.