Use the APP_NAME to set the cache prefix

.env.example

@@ -19,7 +19,6 @@ DB_DATABASE=hypothetical
 DB_USERNAME=homestead
 DB_PASSWORD=secret
 
-CACHE_NAME=hypothetical
 CACHE_DRIVER=file
 BROADCAST_DRIVER=log
 SESSION_DRIVER=file

config/cache.php

@@ -86,6 +86,9 @@ return [
     |
     */
 
-    'prefix' => env('CACHE_NAME', 'hypothetical'),
+    'prefix' => env(
+        'CACHE_PREFIX',
+        str_slug(env('APP_NAME', 'hypothetical'), '_').'_cache'
+    ),
 
 ];