PLT-6355: Use separate Read Replicas for Search. (#6216)

store/store.go

@@ -52,6 +52,7 @@ type Store interface {
 	DropAllTables()
 	TotalMasterDbConnections() int
 	TotalReadDbConnections() int
+	TotalSearchDbConnections() int
 }
 
 type TeamStore interface {