*Hi Mark,* *You need to upgrade.* *Noted!*
Will there be any default cache-control headers that are set (when they are not set explicitly by API-1) by Tomcat when issuing a request from Tomcat on Server1 to Varnish on Server2? *You need to look at whatever code is issuing the request from Tomcat on Server1 to Varnish on Server2* We have tried replicating the issue by using a local machine (spring-boot application as an API-1 with integrated tomcat) to hit API-2 which is on Server2, in this case, Cache-Control headers are *not being transmitted* to Varnish of server2. Tomcat is not an HTTP client and provides no HTTP client API. You need > to look at whatever code is issuing the request from Tomcat on Server1 > to Varnish on Server2. The one thing I can be certain of is that no > Tomcat code is involved. > Thanks & Regards, Uday Kumar