Hi. I am learning create Rest service  with Cache. From this repo. https://github.com/intersystems-ru/REST

I created new web application from Web Applications  section in Management Portal. Such as screenshot.  In browser  call http://127.0.0.1:57772/rest/test . But got  "Service Unavailable" 503 response.  Could you please help?

Hi. I am newby in Cache. My source code at below. I have problem in Relationship property. Could you please help?

 /// Class %Persistent

 Test.Chapter %Persistent

then in terminal I am running these commands:

USER>set c1 = ##class(Test.Chapter).%New()
USER>set c1.Name = "Introduction"
USER>set c1.Page = 10
USER>set c2 = ##class(Test.Chapter).%New()
USER>set c2.Name = "Development of DB"
USER>set c2.Page = 13
USER>set b = ##class(Test.Book).%OpenId(1)

USER>do b.Chapters.Insert(c1)