(chore): Change cache prefix

src/Client.php

@@ -161,6 +161,6 @@ class Client
             $this->config->getApplicationName(),
             $this->config->getInstanceId(),
             $this->config->getVersion()
-        ])), 4, 16);
+        ])), 4, 9);
     }
 }

src/Unleash.php

@@ -9,6 +9,8 @@ use Psr\SimpleCache\InvalidArgumentException;
 
 class Unleash
 {
+    const UNLEASH_CLIENT_CACHE_PREFIX = '_unlsh';
+
     /** @var string */
     const UNLEASH_CLIENT_CACHE_TIMEOUT_KEY = 'cache_timeout';
 
@@ -134,6 +136,6 @@ class Unleash
      */
     protected function buildCacheKey(string $key): string
     {
-        return implode('_', [ '_unl', $this->client->getId(), $key ]);
+        return static::UNLEASH_CLIENT_CACHE_PREFIX . $this->client->getId() . '-' . $key;
     }
 }