fix killnig and 55h

cmd/pinger/main.go

@@ -146,7 +146,12 @@ func (s S) collectGarbage(ctx context.Context) error {
 	c := time.NewTicker(time.Hour)
 	defer c.Stop()
 
-	for range c.C {
+	for {
+		select {
+		case <-c.C:
+		case <-ctx.Done():
+			return nil
+		}
 		if _, err := s.ExecContext(ctx, `
 			DELETE FROM "pinger_pings"
 			WHERE
@@ -155,7 +160,7 @@ func (s S) collectGarbage(ctx context.Context) error {
 					ms < 100
 					OR ok
 				)
-		`, time.Now().Add(-1*12*time.Hour).Unix()); err != nil {
+		`, time.Now().Add(-1*55*time.Hour).Unix()); err != nil {
 			log.Println("!", err)
 		}
 	}