diff --git a/.github/workflows/deploy-front.yml b/.github/workflows/deploy-front.yml
index 9cc6044..4b85da6 100644
--- a/.github/workflows/deploy-front.yml
+++ b/.github/workflows/deploy-front.yml
@@ -62,3 +62,11 @@ jobs:
           publish-profile: ${{ secrets.AZURE_FRONT_PUBLISH_PROFILE }}
           images: ${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}
           restart: true
+
+      # Warm-up: force ISR regeneration so first real user gets data
+      - name: Warm-up (force ISR regeneration)
+        run: |
+          echo "Waiting for App Service to start..."
+          sleep 30
+          curl -s -o /dev/null -w "%{http_code}" https://info-embalse-front-prod-ecguababcfdsepga.westeurope-01.azurewebsites.net/
+          echo " - Warm-up done, ISR regeneration triggered"
diff --git a/front/src/pods/embalse-search/embalse-search.repository.ts b/front/src/pods/embalse-search/embalse-search.repository.ts
index e2d9156..b2b7817 100644
--- a/front/src/pods/embalse-search/embalse-search.repository.ts
+++ b/front/src/pods/embalse-search/embalse-search.repository.ts
@@ -4,27 +4,34 @@ import { getDb } from "@/lib/mongodb";
 import type { Embalse } from "./api/api.model";
 
 export async function getEmbalsesFromDb(): Promise<Embalse[]> {
-  const db = await getDb();
-  const docs = await db
-    .collection("embalses")
-    .find(
-      {},
-      {
-        projection: {
-          _id: 1,
-          nombre: 1,
-          provincia: 1,
-          slug: 1,
+  try {
+    const db = await getDb();
+    const docs = await db
+      .collection("embalses")
+      .find(
+        {},
+        {
+          projection: {
+            _id: 1,
+            nombre: 1,
+            provincia: 1,
+            slug: 1,
+          },
         },
-      },
-    )
-    .toArray();
+      )
+      .toArray();
 
-  return docs.map((doc) => ({
-    _id: doc.slug ?? createSlug(doc.nombre ?? ""),
-    nombre: doc.nombre ?? "",
-    provincia: doc.provincia ?? "",
-  }));
+    return docs.map((doc) => ({
+      _id: doc.slug ?? createSlug(doc.nombre ?? ""),
+      nombre: doc.nombre ?? "",
+      provincia: doc.provincia ?? "",
+    }));
+  } catch {
+    console.warn(
+      "getEmbalsesFromDb: MongoDB not available (build time?), returning empty array"
+    );
+    return [];
+  }
 }
 
 const createSlug = (nombre: string): string => {