Add the ability to prefix cache differently.

.env.example

@@ -37,6 +37,7 @@ MAIL_ENCRYPTION=null
 SEND_REGISTRATION_MAIL=true
 SEND_ERROR_MESSAGE=true
 SHOW_INCOMPLETE_TRANSLATIONS=false
+CACHE_PREFIX=firefly
 
 ANALYTICS_ID=
 SITE_OWNER=mail@example.com

config/cache.php

@@ -94,6 +94,6 @@ return [
     |
     */
 
-    'prefix' => 'firefly',
+    'prefix' => env('CACHE_PREFIX', 'firefly'),
 
 ];