diff --git a/src/AbstractCache.php b/src/AbstractCache.php
index 378e8fd..df45cf6 100644
--- a/src/AbstractCache.php
+++ b/src/AbstractCache.php
@@ -14,6 +14,20 @@
 abstract class AbstractCache implements CacheInterface
 {
 
+  /** @var int */
+  protected int $_ttl = 3600;
+
+  /**
+   * @param int $ttl
+   *
+   * @return AbstractCache
+   */
+  public function setTtl(int $ttl): AbstractCache
+  {
+    $this->_ttl = $ttl;
+    return $this;
+  }
+
   /**
    * @param string $key
    *
diff --git a/src/ApcuCache.php b/src/ApcuCache.php
index 7d29f67..21922e5 100644
--- a/src/ApcuCache.php
+++ b/src/ApcuCache.php
@@ -64,6 +64,11 @@ public function set($key, $value, $ttl = null)
       apcu_delete($key);
     }
 
+    if(!$ttl)
+    {
+      $ttl = $this->_ttl;
+    }
+
     if(apcu_add($key, $value, $ttl))
     {
       $this->_cacheKeys[] = $key;
diff --git a/src/FileCache.php b/src/FileCache.php
index ff7f2ab..eab6ce4 100644
--- a/src/FileCache.php
+++ b/src/FileCache.php
@@ -18,16 +18,12 @@ class FileCache extends AbstractCache
   /** @var string|null */
   protected ?string $_directoryPath;
 
-  /** @var int */
-  protected int $_ttl = 3600;
-
   /**
    * FileCache constructor.
    *
    * @param string|null $directoryPath
-   * @param int|null    $ttl
    */
-  public function __construct(string $directoryPath = null, int $ttl = null)
+  public function __construct(string $directoryPath = null)
   {
     $this->_directoryPath = $directoryPath;
 
@@ -37,11 +33,6 @@ public function __construct(string $directoryPath = null, int $ttl = null)
       $this->_directoryPath = dirname(__DIR__, 4) . self::CACHE_PATH;
     }
 
-    if($ttl !== null)
-    {
-      $this->_ttl = $ttl;
-    }
-
     // Try to create the directory if it doesn't exist
     if(!file_exists($this->_directoryPath) && !@mkdir($this->_directoryPath, 0777, true) && !is_dir(
         $this->_directoryPath
@@ -110,6 +101,11 @@ public function set($key, $value, $ttl = null): bool
     $path = $this->_getPath($key);
     $this->_validateKey($key);
 
+    if(!$ttl)
+    {
+      $ttl = $this->_ttl;
+    }
+
     $success = file_put_contents($path, serialize($value));
 
     if(!$success)