https://github.com/graphql-java/graphql-spring-boot

endpoints
/graphiql

2020
https://dzone.com/articles/a-beginners-guide-to-graphql-with-spring-boot
    https://habr.com/ru/post/513170/
2018
https://habr.com/post/421985/
https://github.com/piomin/sample-graphql-microservices
https://github.com/lynx-r/sample-graphql-microservices


compile('com.graphql-java:graphql-spring-boot-starter:5.0.2')
compile('com.graphql-java:graphiql-spring-boot-starter:5.0.2')
compile('com.graphql-java:graphql-java-tools:5.2.3')