Set the retention policy on the store

monitor/service.go

@@ -76,6 +76,7 @@ func New(c Config) *Monitor {
 		storeEnabled:         c.StoreEnabled,
 		storeDatabase:        c.StoreDatabase,
 		storeInterval:        time.Duration(c.StoreInterval),
+		storeRetentionPolicy: MonitorRetentionPolicy,
 		Logger:               log.New(os.Stderr, "[monitor] ", log.LstdFlags),
 	}
 }