diff --git a/database/migrations/2024_05_26_163238_cache_unique_key.php b/database/migrations/2024_05_26_163238_cache_unique_key.php
new file mode 100644
index 0000000..279320c
--- /dev/null
+++ b/database/migrations/2024_05_26_163238_cache_unique_key.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table(
+            'cache', function (Blueprint $table) {
+                $table->unique('key');
+            }
+        );
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table(
+            'cache', function (Blueprint $table) {
+                $table->dropUnique('cache_key_unique');
+            }
+        );
+    }
+};