diff --git a/src/services/database.service.ts b/src/services/database.service.ts
index ff5e7c5..2d2d887 100755
--- a/src/services/database.service.ts
+++ b/src/services/database.service.ts
@@ -56,19 +56,34 @@ export class Database {
     return this.sendMessageToWorker('INIT', {});
   }
 
-  public async getDb(): Promise<IDBDatabase> {
-    if (!this.db) {
-      await this.init();
-    }
-    return this.db!;
+  private sendMessageToWorker<T = any>(type: string, payload: any): Promise<T> {
+    return new Promise((resolve, reject) => {
+      if (!this.indexedDBWorker) {
+        reject(new Error('IndexedDB Worker not initialized'));
+        return;
+      }
+
+      const id = this.messageIdCounter++;
+      this.pendingMessages.set(id, { resolve, reject });
+
+      this.indexedDBWorker.postMessage({ type, payload, id });
+
+      // Timeout de sécurité (30 secondes)
+      setTimeout(() => {
+        if (this.pendingMessages.has(id)) {
+          this.pendingMessages.delete(id);
+          reject(new Error(`Worker message timeout for type: ${type}`));
+        }
+      }, 30000);
+    });
   }
 
-  public getStoreList(): { [key: string]: string } {
-    const objectList: { [key: string]: string } = {};
-    Object.keys(this.storeDefinitions).forEach((key) => {
-      objectList[key] = this.storeDefinitions[key as keyof typeof this.storeDefinitions].name;
-    });
-    return objectList;
+  // ============================================
+  // SERVICE WORKER
+  // ============================================
+
+  private initServiceWorker(): void {
+    this.registerServiceWorker('/database.worker.js');
   }
 
   private async registerServiceWorker(path: string): Promise<void> {