This is sample project spring-boot multiple datasource with querydsl.
mvn test
GET
get all first db data
/api/first
GET
get all messages first db data
/api/first/messages
PUT
save random data to first db
/api/first
GET
get all second db data
/api/second
GET
get all messages second db data
/api/second/messages
PUT
save random data to second db
/api/second