diff --git a/.jeeves.phpunit.yaml b/.jeeves.phpunit.yaml
index 061ddab..a61240e 100644
--- a/.jeeves.phpunit.yaml
+++ b/.jeeves.phpunit.yaml
@@ -41,6 +41,7 @@ Mygento:
     Banner:
       api: true
       readonly: true
+      cache_tag: samp_ban
       columns:
         id:
           type: int
diff --git a/README.md b/README.md
index fa08656..b0d4c01 100644
--- a/README.md
+++ b/README.md
@@ -8,3 +8,8 @@ go to ```https://github.com/mygento/jeeves/releases/latest``` download phar and
 ```
 sudo mv jeeves.phar /usr/local/bin/jeeves
 ```
+
+
+sample
+
+look in ```.jeeves.phpunit.yaml```
diff --git a/src/Jeeves/Console/Command/ModelCrud.php b/src/Jeeves/Console/Command/ModelCrud.php
index 412ed84..ee4d89d 100644
--- a/src/Jeeves/Console/Command/ModelCrud.php
+++ b/src/Jeeves/Console/Command/ModelCrud.php
@@ -397,10 +397,11 @@ private function genModule($vendor, $module, $entity, $config)
 
         $routepath = $config['route']['admin'];
         $fields = $config['columns'];
+        $entityTag = $config['cache_tag'] ?? strtolower(substr($module, 0, 3) . '_' . substr($entity, 0, 1));
 
         // interface
         $interGenerator = new \Mygento\Jeeves\Generators\Crud\Interfaces();
-        $this->genModelInterface($interGenerator, $entity, $fields);
+        $this->genModelInterface($interGenerator, $entity, $entityTag, $fields);
         $this->genModelRepositoryInterface($interGenerator, $entity);
         $this->genModelSearchInterface($interGenerator, $entity);
 
@@ -481,7 +482,7 @@ private function genRepo($generator, $entityName)
         );
     }
 
-    private function genModelInterface($generator, $entityName, $fields)
+    private function genModelInterface($generator, $entityName, $tag, $fields)
     {
         $filePath = $this->path . '/Api/Data/';
         $fileName = ucfirst($entityName) . 'Interface';
@@ -491,6 +492,7 @@ private function genModelInterface($generator, $entityName, $fields)
             $generator->genModelInterface(
                 $fileName,
                 $this->getNamespace(),
+                $tag,
                 $fields
             )
         );
diff --git a/src/Jeeves/Generators/Crud/Interfaces.php b/src/Jeeves/Generators/Crud/Interfaces.php
index 8eafe4b..e161c9c 100644
--- a/src/Jeeves/Generators/Crud/Interfaces.php
+++ b/src/Jeeves/Generators/Crud/Interfaces.php
@@ -6,10 +6,13 @@
 
 class Interfaces extends Common
 {
-    public function genModelInterface($className, $rootNamespace, $fields = self::DEFAULT_FIELDS)
+    public function genModelInterface($className, $rootNamespace, $cacheTag, $fields = self::DEFAULT_FIELDS)
     {
         $namespace = new PhpNamespace($rootNamespace . '\Api\Data');
         $interface = $namespace->addInterface($className);
+        $interface->setExtends('\Magento\Framework\DataObject\IdentityInterface');
+
+        $interface->addConstant('CACHE_TAG', $cacheTag);
 
         foreach ($fields as $name => $value) {
             $interface->addConstant(strtoupper($name), strtolower($name));
diff --git a/src/Jeeves/Generators/Crud/Model.php b/src/Jeeves/Generators/Crud/Model.php
index 36e458e..3a712cb 100644
--- a/src/Jeeves/Generators/Crud/Model.php
+++ b/src/Jeeves/Generators/Crud/Model.php
@@ -19,6 +19,11 @@ public function genModel($className, $entInterface, $resource, $rootNamespace, $
             ->setVisibility('protected')
             ->setBody('$this->_init(' . $resource . '::class);');
 
+        $class->addMethod('getIdentities')
+            ->addComment('@return string[]')
+            ->setVisibility('public')
+            ->setBody('return [self::CACHE_TAG . \'_\' . $this->getId()];');
+
         foreach ($fields as $name => $value) {
             $method = $this->snakeCaseToUpperCamelCase($name);
             $class->addMethod('get' . $method)
diff --git a/test/Expectations/Crud/Api/Data/BannerInterface.php b/test/Expectations/Crud/Api/Data/BannerInterface.php
index 9df03b4..d25f8e6 100644
--- a/test/Expectations/Crud/Api/Data/BannerInterface.php
+++ b/test/Expectations/Crud/Api/Data/BannerInterface.php
@@ -2,8 +2,9 @@
 
 namespace Mygento\SampleModule\Api\Data;
 
-interface BannerInterface
+interface BannerInterface extends \Magento\Framework\DataObject\IdentityInterface
 {
+    const CACHE_TAG = 'samp_ban';
     const ID = 'id';
     const NAME = 'name';
     const SUBNAME = 'subname';
diff --git a/test/Expectations/Crud/Api/Data/CustomerAddressInterface.php b/test/Expectations/Crud/Api/Data/CustomerAddressInterface.php
index e7ac92a..58069a1 100644
--- a/test/Expectations/Crud/Api/Data/CustomerAddressInterface.php
+++ b/test/Expectations/Crud/Api/Data/CustomerAddressInterface.php
@@ -2,8 +2,9 @@
 
 namespace Mygento\SampleModule\Api\Data;
 
-interface CustomerAddressInterface
+interface CustomerAddressInterface extends \Magento\Framework\DataObject\IdentityInterface
 {
+    const CACHE_TAG = 'sam_c';
     const ID = 'id';
     const CITY = 'city';
     const CUSTOMER_GROUP = 'customer_group';
diff --git a/test/Expectations/Crud/Model/Banner.php b/test/Expectations/Crud/Model/Banner.php
index 1f8aa70..34904b5 100644
--- a/test/Expectations/Crud/Model/Banner.php
+++ b/test/Expectations/Crud/Model/Banner.php
@@ -6,6 +6,14 @@
 
 class Banner extends AbstractModel implements \Mygento\SampleModule\Api\Data\BannerInterface
 {
+    /**
+     * @return string[]
+     */
+    public function getIdentities()
+    {
+        return [self::CACHE_TAG . '_' . $this->getId()];
+    }
+
     /**
      * Get id
      * @return int|null
diff --git a/test/Expectations/Crud/Model/CustomerAddress.php b/test/Expectations/Crud/Model/CustomerAddress.php
index c8c480d..301ab78 100644
--- a/test/Expectations/Crud/Model/CustomerAddress.php
+++ b/test/Expectations/Crud/Model/CustomerAddress.php
@@ -6,6 +6,14 @@
 
 class CustomerAddress extends AbstractModel implements \Mygento\SampleModule\Api\Data\CustomerAddressInterface
 {
+    /**
+     * @return string[]
+     */
+    public function getIdentities()
+    {
+        return [self::CACHE_TAG . '_' . $this->getId()];
+    }
+
     /**
      * Get id
      * @return int|null