refactor: use only one DB instance for the whole application

persistence/persistence_suite_test.go

@@ -21,8 +21,8 @@ func TestPersistence(t *testing.T) {
 
 	//os.Remove("./test-123.db")
 	//conf.Server.Path = "./test-123.db"
-	conf.Server.DbPath = ":memory:"
-	db.Init()
+	conf.Server.DbPath = "file::memory:?cache=shared"
+	orm.RegisterDataBase("default", db.Driver, conf.Server.DbPath)
 	New()
 	db.EnsureLatestVersion()
 	log.SetLevel(log.LevelCritical)