cache: initial version of db cache

pkg/services/sqlstore/migrations/cache_data_mig.go

@@ -0,0 +1,17 @@
+package migrations
+
+import . "github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+
+func addCacheMigration(mg *Migrator) {
+	var cacheDataV1 = Table{
+		Name: "cache_data",
+		Columns: []*Column{
+			{Name: "key", Type: DB_Char, IsPrimaryKey: true, Length: 16},
+			{Name: "data", Type: DB_Blob},
+			{Name: "expires", Type: DB_Integer, Length: 255, Nullable: false},
+			{Name: "created_at", Type: DB_Integer, Length: 255, Nullable: false},
+		},
+	}
+
+	mg.AddMigration("create cache_data table", NewAddTableMigration(cacheDataV1))
+}

pkg/services/sqlstore/migrations/migrations.go

@@ -33,6 +33,7 @@ func AddMigrations(mg *Migrator) {
 	addUserAuthMigrations(mg)
 	addServerlockMigrations(mg)
 	addUserAuthTokenMigrations(mg)
+	addCacheMigration(mg)
 }
 
 func addMigrationLogMigrations(mg *Migrator) {