diff --git a/services/nginx/app/classes/invoice_period_flag_service.php b/services/nginx/app/classes/invoice_period_flag_service.php
index 6e683b5d..99e99eb8 100644
--- a/services/nginx/app/classes/invoice_period_flag_service.php
+++ b/services/nginx/app/classes/invoice_period_flag_service.php
@@ -529,6 +529,11 @@ class invoice_period_flag_service
         }
 
         if (!is_array($flags)) {
+            // Cache miss — enqueue for warming on the next cron run
+            try {
+                (new redis())->enqueue_invoice_period_warming($dateFrom, $dateTo);
+            } catch (Throwable) {
+            }
             return [];
         }
 
diff --git a/services/nginx/app/classes/redis.php b/services/nginx/app/classes/redis.php
index 19958bf4..29e7f601 100644
--- a/services/nginx/app/classes/redis.php
+++ b/services/nginx/app/classes/redis.php
@@ -447,6 +447,35 @@ class redis implements redis_i
         return $this;
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function enqueue_invoice_period_warming(string $dateFrom, string $dateTo): self
+    {
+        $this->get_client()->sadd('invoice_period_warming_queue', [$dateFrom . '|' . $dateTo]);
+        return $this;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function consume_invoice_period_warming_queue(): array
+    {
+        $client = $this->get_client();
+        $members = $client->smembers('invoice_period_warming_queue');
+        if (!empty($members)) {
+            $client->del('invoice_period_warming_queue');
+        }
+        $periods = [];
+        foreach ($members as $member) {
+            $parts = explode('|', (string)$member, 2);
+            if (count($parts) === 2 && $parts[0] !== '' && $parts[1] !== '') {
+                $periods[] = ['dateFrom' => $parts[0], 'dateTo' => $parts[1]];
+            }
+        }
+        return $periods;
+    }
+
     /**
      * @inheritDoc
      */
diff --git a/services/nginx/app/cron/Cron.php b/services/nginx/app/cron/Cron.php
index 2793b966..db52c3a9 100644
--- a/services/nginx/app/cron/Cron.php
+++ b/services/nginx/app/cron/Cron.php
@@ -160,11 +160,26 @@ function WarmInvoicePeriodAutomaticFlagsCron(): void
     $service = new invoice_period_flag_service();
     $now = new DateTime();
     $previousMonth = new DateTime('first day of previous month');
+
+    $toWarm = [];
     foreach ([$now, $previousMonth] as $date) {
         $dateFrom = $date->format('Y-m-01');
         $dateTo = $date->format('Y-m-t');
-        $service->warmOrderItemRowsForPeriod($dateFrom, $dateTo);
-        $service->warmAutomaticFlagsForPeriod($dateFrom, $dateTo);
+        $toWarm[$dateFrom . '|' . $dateTo] = ['dateFrom' => $dateFrom, 'dateTo' => $dateTo];
+    }
+
+    try {
+        $queued = (new redis())->consume_invoice_period_warming_queue();
+        foreach ($queued as $period) {
+            $key = $period['dateFrom'] . '|' . $period['dateTo'];
+            $toWarm[$key] = $period;
+        }
+    } catch (Throwable) {
+    }
+
+    foreach ($toWarm as $period) {
+        $service->warmOrderItemRowsForPeriod($period['dateFrom'], $period['dateTo']);
+        $service->warmAutomaticFlagsForPeriod($period['dateFrom'], $period['dateTo']);
     }
 }
 
diff --git a/services/nginx/app/interfaces/redis_i.php b/services/nginx/app/interfaces/redis_i.php
index e11b028c..a431312d 100644
--- a/services/nginx/app/interfaces/redis_i.php
+++ b/services/nginx/app/interfaces/redis_i.php
@@ -381,4 +381,18 @@ interface redis_i
      * @return self
      */
     public function clear_permission(string $cache_key): self;
+
+    /**
+     * Enqueue a period for automatic flags warming.
+     * @param string $dateFrom
+     * @param string $dateTo
+     * @return self
+     */
+    public function enqueue_invoice_period_warming(string $dateFrom, string $dateTo): self;
+
+    /**
+     * Consume all queued warming periods and clear the queue.
+     * @return array<int,array{dateFrom:string,dateTo:string}>
+     */
+    public function consume_invoice_period_warming_queue(): array;
 }
\ No newline at end of file