diff --git a/README.md b/README.md
index 1385946..b1caaec 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,15 @@
-# file-cache
+# Cache
+
+Different caching implementations based of PSR-16. 
+
+
+## File Cache
+Simple file cache that will store the files in the root of the project folder.
+Can be customised. 
+
+## APCU Cache
+Simple APCU Cache that can be used to store the cached object in APCU
+
+
+### TODO
+Implement multiple functions.
diff --git a/composer.json b/composer.json
index c116cc4..c96d1e3 100644
--- a/composer.json
+++ b/composer.json
@@ -1,22 +1,33 @@
 {
-    "name": "mressex/file-cache",
-    "authors": [
-        {
-            "name": "Kyle Essex"
-        }
-    ],
-    "require": {
-        "phpunit/phpunit": "^9.2",
-        "psr/simple-cache": "^1.0"
+  "name": "mressex/cache",
+  "type": "library",
+  "description": "Different PSR-16 cache implementations ",
+  "keywords": [
+    "Cache",
+    "Caching"
+  ],
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "Kyle Essex"
     }
-    ,
-    "require-dev": {
-        "roave/security-advisories": "dev-master"
-    },
-    "autoload": {
-        "psr-4": {
-            "MrEssex\\FileCache\\": "src",
-            "MrEssex\\FileCache\\Tests\\": "tests"
-        }
+  ],
+  "require": {
+    "php": "^7.4",
+    "ext-apcu": "*",
+    "phpunit/phpunit": "^9.5.2",
+    "psr/simple-cache": "^1.0"
+  },
+  "provide": {
+    "psr/simple-cache-implementation": "^1.0"
+  },
+  "require-dev": {
+    "roave/security-advisories": "dev-master"
+  },
+  "autoload": {
+    "psr-4": {
+      "MrEssex\\FileCache\\": "src",
+      "MrEssex\\FileCache\\Tests\\": "tests"
     }
+  }
 }
diff --git a/composer.lock b/composer.lock
index e013912..5eb80f4 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,40 +4,35 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "a97438b2e4a2e7ce0196896d0962aed2",
+    "content-hash": "c93a4eb7e6da934d30ecc6b88a248925",
     "packages": [
         {
             "name": "doctrine/instantiator",
-            "version": "1.3.1",
+            "version": "1.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "f350df0268e904597e3bd9c4685c53e0e333feea"
+                "reference": "d56bf6102915de5702778fe20f2de3b2fe570b5b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/f350df0268e904597e3bd9c4685c53e0e333feea",
-                "reference": "f350df0268e904597e3bd9c4685c53e0e333feea",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/d56bf6102915de5702778fe20f2de3b2fe570b5b",
+                "reference": "d56bf6102915de5702778fe20f2de3b2fe570b5b",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1 || ^8.0"
             },
             "require-dev": {
-                "doctrine/coding-standard": "^6.0",
+                "doctrine/coding-standard": "^8.0",
                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpbench/phpbench": "^0.13",
-                "phpstan/phpstan-phpunit": "^0.11",
-                "phpstan/phpstan-shim": "^0.11",
-                "phpunit/phpunit": "^7.0"
+                "phpbench/phpbench": "^0.13 || 1.0.0-alpha2",
+                "phpstan/phpstan": "^0.12",
+                "phpstan/phpstan-phpunit": "^0.12",
+                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.2.x-dev"
-                }
-            },
             "autoload": {
                 "psr-4": {
                     "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
@@ -51,7 +46,7 @@
                 {
                     "name": "Marco Pivetta",
                     "email": "ocramius@gmail.com",
-                    "homepage": "http://ocramius.github.com/"
+                    "homepage": "https://ocramius.github.io/"
                 }
             ],
             "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
@@ -60,6 +55,10 @@
                 "constructor",
                 "instantiate"
             ],
+            "support": {
+                "issues": "https://github.com/doctrine/instantiator/issues",
+                "source": "https://github.com/doctrine/instantiator/tree/1.4.0"
+            },
             "funding": [
                 {
                     "url": "https://www.doctrine-project.org/sponsorship.html",
@@ -74,24 +73,24 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-05-29T17:27:14+00:00"
+            "time": "2020-11-10T18:47:58+00:00"
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.9.5",
+            "version": "1.10.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "b2c28789e80a97badd14145fda39b545d83ca3ef"
+                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/b2c28789e80a97badd14145fda39b545d83ca3ef",
-                "reference": "b2c28789e80a97badd14145fda39b545d83ca3ef",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/776f831124e9c62e1a2c601ecc52e776d8bb7220",
+                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1"
+                "php": "^7.1 || ^8.0"
             },
             "replace": {
                 "myclabs/deep-copy": "self.version"
@@ -122,32 +121,99 @@
                 "object",
                 "object graph"
             ],
-            "time": "2020-01-17T21:11:47+00:00"
+            "support": {
+                "issues": "https://github.com/myclabs/DeepCopy/issues",
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.10.2"
+            },
+            "funding": [
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/myclabs/deep-copy",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-11-13T09:40:50+00:00"
+        },
+        {
+            "name": "nikic/php-parser",
+            "version": "v4.10.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nikic/PHP-Parser.git",
+                "reference": "c6d052fc58cb876152f89f532b95a8d7907e7f0e"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/c6d052fc58cb876152f89f532b95a8d7907e7f0e",
+                "reference": "c6d052fc58cb876152f89f532b95a8d7907e7f0e",
+                "shasum": ""
+            },
+            "require": {
+                "ext-tokenizer": "*",
+                "php": ">=7.0"
+            },
+            "require-dev": {
+                "ircmaxell/php-yacc": "^0.0.7",
+                "phpunit/phpunit": "^6.5 || ^7.0 || ^8.0 || ^9.0"
+            },
+            "bin": [
+                "bin/php-parse"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.9-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PhpParser\\": "lib/PhpParser"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Nikita Popov"
+                }
+            ],
+            "description": "A PHP parser written in PHP",
+            "keywords": [
+                "parser",
+                "php"
+            ],
+            "support": {
+                "issues": "https://github.com/nikic/PHP-Parser/issues",
+                "source": "https://github.com/nikic/PHP-Parser/tree/v4.10.4"
+            },
+            "time": "2020-12-20T10:01:03+00:00"
         },
         {
             "name": "phar-io/manifest",
-            "version": "1.0.3",
+            "version": "2.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phar-io/manifest.git",
-                "reference": "7761fcacf03b4d4f16e7ccb606d4879ca431fcf4"
+                "reference": "85265efd3af7ba3ca4b2a2c34dbfc5788dd29133"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phar-io/manifest/zipball/7761fcacf03b4d4f16e7ccb606d4879ca431fcf4",
-                "reference": "7761fcacf03b4d4f16e7ccb606d4879ca431fcf4",
+                "url": "https://api.github.com/repos/phar-io/manifest/zipball/85265efd3af7ba3ca4b2a2c34dbfc5788dd29133",
+                "reference": "85265efd3af7ba3ca4b2a2c34dbfc5788dd29133",
                 "shasum": ""
             },
             "require": {
                 "ext-dom": "*",
                 "ext-phar": "*",
-                "phar-io/version": "^2.0",
-                "php": "^5.6 || ^7.0"
+                "ext-xmlwriter": "*",
+                "phar-io/version": "^3.0.1",
+                "php": "^7.2 || ^8.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "2.0.x-dev"
                 }
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@@ -177,24 +243,28 @@
                 }
             ],
             "description": "Component for reading phar.io manifest information from a PHP Archive (PHAR)",
-            "time": "2018-07-08T19:23:20+00:00"
+            "support": {
+                "issues": "https://github.com/phar-io/manifest/issues",
+                "source": "https://github.com/phar-io/manifest/tree/master"
+            },
+            "time": "2020-06-27T14:33:11+00:00"
         },
         {
             "name": "phar-io/version",
-            "version": "2.0.1",
+            "version": "3.0.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phar-io/version.git",
-                "reference": "45a2ec53a73c70ce41d55cedef9063630abaf1b6"
+                "reference": "e4782611070e50613683d2b9a57730e9a3ba5451"
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-                "reference": "45a2ec53a73c70ce41d55cedef9063630abaf1b6",
+                "url": "https://api.github.com/repos/phar-io/version/zipball/e4782611070e50613683d2b9a57730e9a3ba5451",
+                "reference": "e4782611070e50613683d2b9a57730e9a3ba5451",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.6 || ^7.0"
+                "php": "^7.2 || ^8.0"
             },
             "type": "library",
             "autoload": {
@@ -224,29 +294,33 @@
                 }
             ],
             "description": "Library for handling version information and constraints",
-            "time": "2018-07-08T19:19:57+00:00"
+            "support": {
+                "issues": "https://github.com/phar-io/version/issues",
+                "source": "https://github.com/phar-io/version/tree/3.0.4"
+            },
+            "time": "2020-12-13T23:18:30+00:00"
         },
         {
             "name": "phpdocumentor/reflection-common",
-            "version": "2.1.0",
+            "version": "2.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
-                "reference": "6568f4687e5b41b054365f9ae03fcb1ed5f2069b"
+                "reference": "1d01c49d4ed62f25aa84a747ad35d5a16924662b"
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             "dist": {
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-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/6568f4687e5b41b054365f9ae03fcb1ed5f2069b",
-                "reference": "6568f4687e5b41b054365f9ae03fcb1ed5f2069b",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/1d01c49d4ed62f25aa84a747ad35d5a16924662b",
+                "reference": "1d01c49d4ed62f25aa84a747ad35d5a16924662b",
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+                "php": "^7.2 || ^8.0"
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             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.x-dev"
+                    "dev-2.x": "2.x-dev"
                 }
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             "autoload": {
@@ -273,32 +347,35 @@
                 "reflection",
                 "static analysis"
             ],
-            "time": "2020-04-27T09:25:28+00:00"
+            "support": {
+                "issues": "https://github.com/phpDocumentor/ReflectionCommon/issues",
+                "source": "https://github.com/phpDocumentor/ReflectionCommon/tree/2.x"
+            },
+            "time": "2020-06-27T09:03:43+00:00"
         },
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             "name": "phpdocumentor/reflection-docblock",
-            "version": "5.1.0",
+            "version": "5.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
-                "reference": "cd72d394ca794d3466a3b2fc09d5a6c1dc86b47e"
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-                "phpdocumentor/reflection-common": "^2.0",
-                "phpdocumentor/type-resolver": "^1.0",
-                "webmozart/assert": "^1"
+                "ext-filter": "*",
+                "php": "^7.2 || ^8.0",
+                "phpdocumentor/reflection-common": "^2.2",
+                "phpdocumentor/type-resolver": "^1.3",
+                "webmozart/assert": "^1.9.1"
             },
             "require-dev": {
-                "doctrine/instantiator": "^1",
-                "mockery/mockery": "^1"
+                "mockery/mockery": "~1.3.2"
             },
             "type": "library",
             "extra": {
@@ -326,29 +403,32 @@
                 }
             ],
             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
-            "time": "2020-02-22T12:28:44+00:00"
+            "support": {
+                "issues": "https://github.com/phpDocumentor/ReflectionDocBlock/issues",
+                "source": "https://github.com/phpDocumentor/ReflectionDocBlock/tree/master"
+            },
+            "time": "2020-09-03T19:13:55+00:00"
         },
         {
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-            "version": "1.2.0",
+            "version": "1.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/TypeResolver.git",
-                "reference": "30441f2752e493c639526b215ed81d54f369d693"
+                "reference": "6a467b8989322d92aa1c8bf2bebcc6e5c2ba55c0"
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-                "reference": "30441f2752e493c639526b215ed81d54f369d693",
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             },
             "require-dev": {
-                "ext-tokenizer": "^7.2",
-                "mockery/mockery": "~1"
+                "ext-tokenizer": "*"
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             "type": "library",
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@@ -372,37 +452,41 @@
                 }
             ],
             "description": "A PSR-5 based resolver of Class names, Types and Structural Element Names",
-            "time": "2020-06-19T20:22:09+00:00"
+            "support": {
+                "issues": "https://github.com/phpDocumentor/TypeResolver/issues",
+                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.4.0"
+            },
+            "time": "2020-09-17T18:55:26+00:00"
         },
         {
             "name": "phpspec/prophecy",
-            "version": "v1.10.3",
+            "version": "1.12.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpspec/prophecy.git",
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-                "sebastian/recursion-context": "^1.0|^2.0|^3.0|^4.0"
+                "doctrine/instantiator": "^1.2",
+                "php": "^7.2 || ~8.0, <8.1",
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+                "sebastian/comparator": "^3.0 || ^4.0",
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-                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5 || ^7.1"
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+                "phpunit/phpunit": "^8.0 || ^9.0"
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+                    "dev-master": "1.11.x-dev"
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@@ -435,36 +519,43 @@
                 "spy",
                 "stub"
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-            "time": "2020-03-05T15:02:03+00:00"
+            "support": {
+                "issues": "https://github.com/phpspec/prophecy/issues",
+                "source": "https://github.com/phpspec/prophecy/tree/1.12.2"
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                 "silverstripe/forum": "<=0.6.1|>=0.7,<=0.7.3",
-                "silverstripe/framework": "<4.4.5|>=4.5,<4.5.2",
-                "silverstripe/graphql": ">=2,<2.0.5|>=3,<3.1.2",
+                "silverstripe/framework": "<4.4.7|>=4.5,<4.5.4",
+                "silverstripe/graphql": ">=2,<2.0.5|>=3,<3.1.2|>=3.2,<3.2.4",
                 "silverstripe/registry": ">=2.1,<2.1.2|>=2.2,<2.2.1",
                 "silverstripe/restfulserver": ">=1,<1.0.9|>=2,<2.0.4",
                 "silverstripe/subsites": ">=2,<2.1.1",
@@ -1987,17 +2339,19 @@
                 "slim/slim": "<2.6",
                 "smarty/smarty": "<3.1.33",
                 "socalnick/scn-social-auth": "<1.15.2",
+                "socialiteproviders/steam": "<1.1",
                 "spoonity/tcpdf": "<6.2.22",
                 "squizlabs/php_codesniffer": ">=1,<2.8.1|>=3,<3.0.1",
                 "ssddanbrown/bookstack": "<0.29.2",
                 "stormpath/sdk": ">=0,<9.9.99",
                 "studio-42/elfinder": "<2.1.49",
+                "sulu/sulu": "<1.6.34|>=2,<2.0.10|>=2.1,<2.1.1",
                 "swiftmailer/swiftmailer": ">=4,<5.4.5",
                 "sylius/admin-bundle": ">=1,<1.0.17|>=1.1,<1.1.9|>=1.2,<1.2.2",
                 "sylius/grid": ">=1,<1.1.19|>=1.2,<1.2.18|>=1.3,<1.3.13|>=1.4,<1.4.5|>=1.5,<1.5.1",
                 "sylius/grid-bundle": ">=1,<1.1.19|>=1.2,<1.2.18|>=1.3,<1.3.13|>=1.4,<1.4.5|>=1.5,<1.5.1",
-                "sylius/resource-bundle": "<1.3.13|>=1.4,<1.4.6|>=1.5,<1.5.1|>=1.6,<1.6.3",
-                "sylius/sylius": "<1.3.16|>=1.4,<1.4.12|>=1.5,<1.5.9|>=1.6,<1.6.5",
+                "sylius/resource-bundle": "<1.3.14|>=1.4,<1.4.7|>=1.5,<1.5.2|>=1.6,<1.6.4",
+                "sylius/sylius": "<1.6.9|>=1.7,<1.7.9|>=1.8,<1.8.3",
                 "symbiote/silverstripe-multivaluefield": ">=3,<3.0.99",
                 "symbiote/silverstripe-versionedfiles": "<=2.0.3",
                 "symfony/cache": ">=3.1,<3.4.35|>=4,<4.2.12|>=4.3,<4.3.8",
@@ -2006,7 +2360,7 @@
                 "symfony/form": ">=2.3,<2.3.35|>=2.4,<2.6.12|>=2.7,<2.7.50|>=2.8,<2.8.49|>=3,<3.4.20|>=4,<4.0.15|>=4.1,<4.1.9|>=4.2,<4.2.1",
                 "symfony/framework-bundle": ">=2,<2.3.18|>=2.4,<2.4.8|>=2.5,<2.5.2|>=2.7,<2.7.51|>=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.1.12|>=4.2,<4.2.7",
                 "symfony/http-foundation": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.3.8|>=4.4,<4.4.7|>=5,<5.0.7",
-                "symfony/http-kernel": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.3.8",
+                "symfony/http-kernel": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.4.13|>=5,<5.1.5",
                 "symfony/intl": ">=2.7,<2.7.38|>=2.8,<2.8.31|>=3,<3.2.14|>=3.3,<3.3.13",
                 "symfony/mime": ">=4.3,<4.3.8",
                 "symfony/phpunit-bridge": ">=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.1.12|>=4.2,<4.2.7",
@@ -2021,7 +2375,7 @@
                 "symfony/security-guard": ">=2.8,<2.8.41|>=3,<3.3.17|>=3.4,<3.4.11|>=4,<4.0.11",
                 "symfony/security-http": ">=2.3,<2.3.41|>=2.4,<2.7.51|>=2.8,<2.8.50|>=3,<3.4.26|>=4,<4.2.12|>=4.3,<4.3.8|>=4.4,<4.4.7|>=5,<5.0.7",
                 "symfony/serializer": ">=2,<2.0.11",
-                "symfony/symfony": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.3.8|>=4.4,<4.4.7|>=5,<5.0.7",
+                "symfony/symfony": ">=2,<2.8.52|>=3,<3.4.35|>=4,<4.2.12|>=4.3,<4.4.13|>=5,<5.1.5",
                 "symfony/translation": ">=2,<2.0.17",
                 "symfony/validator": ">=2,<2.0.24|>=2.1,<2.1.12|>=2.2,<2.2.5|>=2.3,<2.3.3",
                 "symfony/var-exporter": ">=4.2,<4.2.12|>=4.3,<4.3.8",
@@ -2035,11 +2389,12 @@
                 "titon/framework": ">=0,<9.9.99",
                 "truckersmp/phpwhois": "<=4.3.1",
                 "twig/twig": "<1.38|>=2,<2.7",
-                "typo3/cms": ">=6.2,<6.2.30|>=7,<7.6.32|>=8,<8.7.30|>=9,<9.5.17|>=10,<10.4.2",
-                "typo3/cms-core": ">=8,<8.7.30|>=9,<9.5.17|>=10,<10.4.2",
+                "typo3/cms": ">=6.2,<6.2.30|>=7,<7.6.32|>=8,<8.7.38|>=9,<9.5.23|>=10,<10.4.10",
+                "typo3/cms-core": ">=8,<8.7.38|>=9,<9.5.23|>=10,<10.4.10",
                 "typo3/flow": ">=1,<1.0.4|>=1.1,<1.1.1|>=2,<2.0.1|>=2.3,<2.3.16|>=3,<3.0.10|>=3.1,<3.1.7|>=3.2,<3.2.7|>=3.3,<3.3.5",
                 "typo3/neos": ">=1.1,<1.1.3|>=1.2,<1.2.13|>=2,<2.0.4",
                 "typo3/phar-stream-wrapper": ">=1,<2.1.1|>=3,<3.1.1",
+                "typo3fluid/fluid": ">=2,<2.0.8|>=2.1,<2.1.7|>=2.2,<2.2.4|>=2.3,<2.3.7|>=2.4,<2.4.4|>=2.5,<2.5.11|>=2.6,<2.6.10",
                 "ua-parser/uap-php": "<3.8",
                 "usmanhalalit/pixie": "<1.0.3|>=2,<2.0.2",
                 "verot/class.upload.php": "<=1.0.3|>=2,<=2.0.4",
@@ -2047,7 +2402,7 @@
                 "willdurand/js-translation-bundle": "<2.1.1",
                 "yii2mod/yii2-cms": "<1.9.2",
                 "yiisoft/yii": ">=1.1.14,<1.1.15",
-                "yiisoft/yii2": "<2.0.15",
+                "yiisoft/yii2": "<2.0.38",
                 "yiisoft/yii2-bootstrap": "<2.0.4",
                 "yiisoft/yii2-dev": "<2.0.15",
                 "yiisoft/yii2-elasticsearch": "<2.0.5",
@@ -2099,6 +2454,10 @@
                 }
             ],
             "description": "Prevents installation of composer packages with known security vulnerabilities: no API, simply require it",
+            "support": {
+                "issues": "https://github.com/Roave/SecurityAdvisories/issues",
+                "source": "https://github.com/Roave/SecurityAdvisories/tree/latest"
+            },
             "funding": [
                 {
                     "url": "https://github.com/Ocramius",
@@ -2109,7 +2468,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-06-19T13:23:43+00:00"
+            "time": "2021-02-02T10:05:32+00:00"
         }
     ],
     "aliases": [],
@@ -2119,7 +2478,9 @@
     },
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "ext-apcu": "*"
+    },
     "platform-dev": [],
-    "plugin-api-version": "1.1.0"
+    "plugin-api-version": "2.0.0"
 }
diff --git a/src/AbstractCache.php b/src/AbstractCache.php
new file mode 100644
index 0000000..378e8fd
--- /dev/null
+++ b/src/AbstractCache.php
@@ -0,0 +1,131 @@
+<?php
+
+namespace MrEssex\FileCache;
+
+use DateInterval;
+use DateTime;
+use MrEssex\FileCache\Exceptions\InvalidArgumentException;
+use Psr\SimpleCache\CacheInterface;
+
+/**
+ * Class AbstractCache
+ * @package MrEssex\FileCache
+ */
+abstract class AbstractCache implements CacheInterface
+{
+
+  /**
+   * @param string $key
+   *
+   * @return string
+   */
+  protected function _generateKey(string $key): string
+  {
+    return md5($key);
+  }
+
+  /**
+   * @param mixed $key
+   *
+   * @return bool
+   */
+  protected function _validateKey($key): bool
+  {
+    if(!is_string($key))
+    {
+      throw InvalidArgumentException::keyIsNotAString($key);
+    }
+
+    if(empty($key))
+    {
+      throw InvalidArgumentException::keyIsEmpty($key);
+    }
+
+    if(preg_match('/[' . preg_quote('{}()/\@:;', '/') . ']/', $key))
+    {
+      throw InvalidArgumentException::keyContainsInvalidCharacters($key);
+    }
+
+    return true;
+  }
+
+  /**
+   * @param int|null|string $ttl
+   *
+   * @return int
+   */
+  protected function _expirationToTimestamp(?int $ttl): int
+  {
+    if($ttl instanceof DateInterval)
+    {
+      $ttl = $ttl->format('%s');
+    }
+    else if($ttl instanceof DateTime)
+    {
+      $ttl = $ttl->getTimestamp();
+    }
+
+    $time = time();
+    $ttl = (int)$ttl;
+
+    if($ttl <= 0 | $ttl === null | $ttl < $time)
+    {
+      $ttl = $time + $this->_ttl;
+    }
+
+    return $ttl;
+  }
+
+  /**
+   * Obtains multiple cache items by their unique keys.
+   *
+   * @param iterable $keys    A list of keys that can obtained in a single operation.
+   * @param mixed    $default Default value to return for keys that do not exist.
+   *
+   * @return iterable A list of key => value pairs. Cache keys that do not exist or are stale will have $default as
+   *                  value.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if $keys is neither an array nor a Traversable,
+   *   or if any of the $keys are not a legal value.
+   */
+  public function getMultiple($keys, $default = null)
+  {
+    // TODO: Implement getMultiple() method.
+  }
+
+  /**
+   * Persists a set of key => value pairs in the cache, with an optional TTL.
+   *
+   * @param iterable              $values  A list of key => value pairs for a multiple-set operation.
+   * @param null|int|DateInterval $ttl     Optional. The TTL value of this item. If no value is sent and
+   *                                       the driver supports TTL then the library may set a default value
+   *                                       for it or let the driver take care of that.
+   *
+   * @return bool True on success and false on failure.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if $values is neither an array nor a Traversable,
+   *   or if any of the $values are not a legal value.
+   */
+  public function setMultiple($values, $ttl = null)
+  {
+    // TODO: Implement setMultiple() method.
+  }
+
+  /**
+   * Deletes multiple cache items in a single operation.
+   *
+   * @param iterable $keys A list of string-based keys to be deleted.
+   *
+   * @return bool True if the items were successfully removed. False if there was an error.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if $keys is neither an array nor a Traversable,
+   *   or if any of the $keys are not a legal value.
+   */
+  public function deleteMultiple($keys)
+  {
+    // TODO: Implement deleteMultiple() method.
+  }
+}
diff --git a/src/ApcuCache.php b/src/ApcuCache.php
new file mode 100644
index 0000000..74432ee
--- /dev/null
+++ b/src/ApcuCache.php
@@ -0,0 +1,147 @@
+<?php
+
+namespace MrEssex\FileCache;
+
+use DateInterval;
+use Psr\SimpleCache\InvalidArgumentException;
+
+class ApcuCache extends AbstractCache
+{
+
+  protected array $_cacheKeys = [];
+
+  /**
+   * Fetches a value from the cache.
+   *
+   * @param string $key     The unique key of this item in the cache.
+   * @param mixed  $default Default value to return if the key does not exist.
+   *
+   * @return mixed The value of the item from the cache, or $default in case of cache miss.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function get($key, $default = null)
+  {
+    $key = $this->_generateKey($key);
+    $this->_validateKey($key);
+
+    if(!apcu_exists($key))
+    {
+      return $default;
+    }
+
+    $value = apcu_fetch($key, $success);
+    if($success)
+    {
+      return $value;
+    }
+
+    return $default;
+  }
+
+  /**
+   * Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
+   *
+   * @param string                $key    The key of the item to store.
+   * @param mixed                 $value  The value of the item to store, must be serializable.
+   * @param null|int|DateInterval $ttl    Optional. The TTL value of this item. If no value is sent and
+   *                                      the driver supports TTL then the library may set a default value
+   *                                      for it or let the driver take care of that.
+   *
+   * @return bool True on success and false on failure.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function set($key, $value, $ttl = null)
+  {
+    $key = $this->_generateKey($key);
+    $this->_validateKey($key);
+
+    if(apcu_exists($key))
+    {
+      apcu_delete($key);
+    }
+
+    if(apcu_add($key, $value, $ttl))
+    {
+      $this->_cacheKeys[] = $key;
+      return true;
+    }
+
+    return false;
+  }
+
+  /**
+   * Delete an item from the cache by its unique key.
+   *
+   * @param string $key The unique cache key of the item to delete.
+   *
+   * @return bool True if the item was successfully removed. False if there was an error.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function delete($key)
+  {
+    $key = $this->_generateKey($key);
+    $this->_validateKey($key);
+
+    unset($this->_cacheKeys[$key]);
+
+    return apcu_delete($key);
+  }
+
+  /**
+   * Wipes clean the entire cache's keys.
+   *
+   * @return bool True on success and false on failure.
+   */
+  public function clear()
+  {
+    if(!$this->_cacheKeys)
+    {
+      return true;
+    }
+
+    foreach($this->_cacheKeys as $cacheKey)
+    {
+      unset($this->_cacheKeys[$cacheKey]);
+      if(!apcu_delete($cacheKey))
+      {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  /**
+   * Determines whether an item is present in the cache.
+   *
+   * NOTE: It is recommended that has() is only to be used for cache warming type purposes
+   * and not to be used within your live applications operations for get/set, as this method
+   * is subject to a race condition where your has() will return true and immediately after,
+   * another script can remove it making the state of your app out of date.
+   *
+   * @param string $key The cache item key.
+   *
+   * @return bool
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function has($key)
+  {
+    $key = $this->_generateKey($key);
+    $this->_validateKey($key);
+
+    if($this->_cacheKeys[$key])
+    {
+      return true;
+    }
+
+    return apcu_exists($key);
+  }
+}
diff --git a/src/Exceptions/InvalidArgumentException.php b/src/Exceptions/InvalidArgumentException.php
index 1ae3b25..4284569 100644
--- a/src/Exceptions/InvalidArgumentException.php
+++ b/src/Exceptions/InvalidArgumentException.php
@@ -13,64 +13,74 @@ class InvalidArgumentException
   implements IInvalidArgumentException
 {
 
-    /**
-     * @param string $directory
-     *
-     * @return InvalidArgumentException
-     */
-    public static function directoryDoesNotExistAndCannotBeCreated(string $directory): InvalidArgumentException
-    {
-        return new self(
-          sprintf(
-            "The Directory: %s does not exist. or isn't readable, isn't writable and/or can't be created!",
-            $directory
-          ), 5
-        );
-    }
+  /**
+   * @param string $directory
+   *
+   * @return InvalidArgumentException
+   */
+  public static function directoryDoesNotExistAndCannotBeCreated(string $directory): InvalidArgumentException
+  {
+    return new self(
+      sprintf(
+        "The Directory: %s does not exist. or isn't readable, isn't writable and/or can't be created!",
+        $directory
+      ), 5
+    );
+  }
 
-    /**
-     * @param mixed $key
-     *
-     * @return InvalidArgumentException
-     */
-    public static function keyIsNotAString($key): InvalidArgumentException
-    {
-        return new self(
-          sprintf(
-            "The specified key: %s is not a string!",
-            $key
-          ), 500
-        );
-    }
+  /**
+   * @param mixed $key
+   *
+   * @return InvalidArgumentException
+   */
+  public static function keyIsNotAString($key): InvalidArgumentException
+  {
+    return new self(
+      sprintf(
+        "The specified key: %s is not a string!",
+        $key
+      ), 500
+    );
+  }
 
-    /**
-     * @param mixed|null $key
-     *
-     * @return InvalidArgumentException
-     */
-    public static function keyIsEmpty($key): InvalidArgumentException
-    {
-        return new self(
-          sprintf(
-            "The specified key: %s is empty!",
-            $key
-          ), 500
-        );
-    }
+  /**
+   * @param mixed|null $key
+   *
+   * @return InvalidArgumentException
+   */
+  public static function keyIsEmpty($key): InvalidArgumentException
+  {
+    return new self(
+      sprintf(
+        "The specified key: %s is empty!",
+        $key
+      ), 500
+    );
+  }
 
-    /**
-     * @param mixed $key
-     *
-     * @return InvalidArgumentException
-     */
-    public static function keyContainsInvalidCharacters($key): InvalidArgumentException
-    {
-        return new self(
-          sprintf(
-            "The specified key: %s must only contain [A-Z] [a-z] [0-9] [_] [.] [-] characters!",
-            $key
-          ), 500
-        );
-    }
+  /**
+   * @param mixed $key
+   *
+   * @return InvalidArgumentException
+   */
+  public static function keyContainsInvalidCharacters($key): InvalidArgumentException
+  {
+    return new self(
+      sprintf(
+        "The specified key: %s must only contain [A-Z] [a-z] [0-9] [_] [.] [-] characters!",
+        $key
+      ), 500
+    );
+  }
+
+  /**
+   * @return InvalidArgumentException
+   */
+  public static function failedToCache(): InvalidArgumentException
+  {
+    return new self(
+      "Failed to add to cache", 500
+    );
+  }
 
 }
diff --git a/src/FileCache.php b/src/FileCache.php
index db1c598..ff7f2ab 100644
--- a/src/FileCache.php
+++ b/src/FileCache.php
@@ -3,320 +3,217 @@
 namespace MrEssex\FileCache;
 
 use DateInterval;
-use DateTime;
 use MrEssex\FileCache\Exceptions\InvalidArgumentException;
-use Psr\SimpleCache\CacheInterface;
-
 use function file_exists;
 use function realpath;
 
 /**
  * Class FileCache
- *
- * @package MrEssex\FileCache\Cache
+ * @package MrEssex\FileCache
  */
-class FileCache implements CacheInterface
+class FileCache extends AbstractCache
 {
-    public const CACHE_PATH = DIRECTORY_SEPARATOR . '.tmp' . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR;
-
-    /** @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)
-    {
-        $this->_directoryPath = $directoryPath;
+  public const CACHE_PATH = DIRECTORY_SEPARATOR . '.tmp' . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR;
 
-        if ($directoryPath === null) {
-            // assume we are running from vendor;
-            $this->_directoryPath = dirname(__DIR__, 4) . self::CACHE_PATH;
-        }
+  /** @var string|null */
+  protected ?string $_directoryPath;
 
-        if ($ttl !== null) {
-            $this->_ttl = $ttl;
-        }
+  /** @var int */
+  protected int $_ttl = 3600;
 
-        // Try to create the directory if it doesn't exist
-        if (!file_exists($this->_directoryPath) && !@mkdir($this->_directoryPath, 0777, true) && !is_dir(
-            $this->_directoryPath
-          )) {
-            throw InvalidArgumentException::directoryDoesNotExistAndCannotBeCreated($this->_directoryPath);
-        }
+  /**
+   * FileCache constructor.
+   *
+   * @param string|null $directoryPath
+   * @param int|null    $ttl
+   */
+  public function __construct(string $directoryPath = null, int $ttl = null)
+  {
+    $this->_directoryPath = $directoryPath;
 
-        if ((realpath($this->_directoryPath) === false) || (!is_readable($this->_directoryPath) || !is_writable(
-              $this->_directoryPath
-            ))) {
-            throw InvalidArgumentException::directoryDoesNotExistAndCannotBeCreated($this->_directoryPath);
-        }
-    }
-
-    /**
-     * Fetches a value from the cache.
-     *
-     * @param string $key     The unique key of this item in the cache.
-     * @param mixed  $default Default value to return if the key does not exist.
-     *
-     * @return mixed The value of the item from the cache, or $default in case of cache miss.
-     *
-     * @throws InvalidArgumentException
-     *   MUST be thrown if the $key string is not a legal value.
-     */
-    public function get($key, $default = false)
+    if($directoryPath === null)
     {
-        $key  = $this->_generateKey($key);
-        $path = $this->_getPath($key);
-        $this->_validateKey($key);
-
-        $content = unserialize(file_get_contents($path), [false]);
-
-        return $content ?: $default;
+      // assume we are running from vendor;
+      $this->_directoryPath = dirname(__DIR__, 4) . self::CACHE_PATH;
     }
 
-    /**
-     * @param string $key
-     *
-     * @return string
-     */
-    protected function _generateKey(string $key): string
+    if($ttl !== null)
     {
-        return md5($key);
+      $this->_ttl = $ttl;
     }
 
-    /**
-     * @param mixed $key
-     *
-     * @return bool
-     */
-    protected function _validateKey($key): bool
+    // Try to create the directory if it doesn't exist
+    if(!file_exists($this->_directoryPath) && !@mkdir($this->_directoryPath, 0777, true) && !is_dir(
+        $this->_directoryPath
+      ))
     {
-        if (!is_string($key)) {
-            throw InvalidArgumentException::keyIsNotAString($key);
-        }
-
-        if (empty($key)) {
-            throw InvalidArgumentException::keyIsEmpty($key);
-        }
-
-        if (preg_match('/[' . preg_quote('{}()/\@:;', '/') . ']/', $key)) {
-            throw InvalidArgumentException::keyContainsInvalidCharacters($key);
-        }
-
-        return true;
+      throw InvalidArgumentException::directoryDoesNotExistAndCannotBeCreated($this->_directoryPath);
     }
 
-    /**
-     * Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
-     *
-     * @param string                $key    The key of the item to store.
-     * @param mixed                 $value  The value of the item to store, must be serializable.
-     * @param null|int|DateInterval $ttl    Optional. The TTL value of this item. If no value is sent and
-     *                                      the driver supports TTL then the library may set a default value
-     *                                      for it or let the driver take care of that.
-     *
-     * @return bool True on success and false on failure.
-     *
-     * @throws InvalidArgumentException
-     *   MUST be thrown if the $key string is not a legal value.
-     */
-    public function set($key, $value, $ttl = null): bool
+    if((realpath($this->_directoryPath) === false) || (!is_readable($this->_directoryPath) || !is_writable(
+          $this->_directoryPath
+        )))
     {
-        $key  = $this->_generateKey($key);
-        $path = $this->_getPath($key);
-        $this->_validateKey($key);
-
-        $success = file_put_contents($path, serialize($value));
-
-        if (!$success) {
-            return false;
-        }
-
-        return touch($path, $this->_expirationToTimestamp($ttl));
+      throw InvalidArgumentException::directoryDoesNotExistAndCannotBeCreated($this->_directoryPath);
     }
-
-    /**
-     * @param string $key
-     *
-     * @return string
-     */
-    protected function _getPath(string $key): string
+  }
+
+  /**
+   * Fetches a value from the cache.
+   *
+   * @param string $key     The unique key of this item in the cache.
+   * @param mixed  $default Default value to return if the key does not exist.
+   *
+   * @return mixed The value of the item from the cache, or $default in case of cache miss.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function get($key, $default = false)
+  {
+    $key = $this->_generateKey($key);
+    $path = $this->_getPath($key);
+    $this->_validateKey($key);
+
+    $content = unserialize(file_get_contents($path), [false]);
+
+    return $content ?: $default;
+  }
+
+  /**
+   * @param string $key
+   *
+   * @return string
+   */
+  protected function _getPath(string $key): string
+  {
+    return $this->_directoryPath . $key;
+  }
+
+  /**
+   * Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
+   *
+   * @param string                $key    The key of the item to store.
+   * @param mixed                 $value  The value of the item to store, must be serializable.
+   * @param null|int|DateInterval $ttl    Optional. The TTL value of this item. If no value is sent and
+   *                                      the driver supports TTL then the library may set a default value
+   *                                      for it or let the driver take care of that.
+   *
+   * @return bool True on success and false on failure.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function set($key, $value, $ttl = null): bool
+  {
+    $key = $this->_generateKey($key);
+    $path = $this->_getPath($key);
+    $this->_validateKey($key);
+
+    $success = file_put_contents($path, serialize($value));
+
+    if(!$success)
     {
-        return $this->_directoryPath . $key;
+      return false;
     }
 
-    /**
-     * @param int|null|string $ttl
-     *
-     * @return int
-     */
-    protected function _expirationToTimestamp(?int $ttl): int
-    {
-        if ($ttl instanceof DateInterval) {
-            $ttl = $ttl->format('%s');
-        } elseif ($ttl instanceof DateTime) {
-            $ttl = $ttl->getTimestamp();
-        }
-
-        $time = time();
-        $ttl  = (int)$ttl;
+    return touch($path, $this->_expirationToTimestamp($ttl));
+  }
 
-        if ($ttl <= 0 | $ttl === null | $ttl < $time) {
-            $ttl = $time + $this->_ttl;
-        }
+  /**
+   * Wipes clean the entire cache's keys.
+   *
+   * @return bool True on success and false on failure.
+   */
+  public function clear(): bool
+  {
+    $files = array_diff(scandir($this->_directoryPath), ['.', '..', '.*']);
+    $success = true;
 
-        return $ttl;
-    }
-
-    /**
-     * Delete an item from the cache by its unique key.
-     *
-     * @param string $key The unique cache key of the item to delete.
-     *
-     * @return bool True if the item was successfully removed. False if there was an error.
-     *
-     * @throws InvalidArgumentException
-     *   MUST be thrown if the $key string is not a legal value.
-     */
-    public function delete($key): bool
+    foreach($files as $file)
     {
-        $key  = $this->_generateKey($key);
-        $path = $this->_getPath($key);
-        $this->_validateKey($key);
-
-        return unlink($path);
+      $success = unlink($this->_directoryPath . $file) && $success;
     }
 
-    /**
-     * Wipes clean the entire cache's keys.
-     *
-     * @return bool True on success and false on failure.
-     */
-    public function clear(): bool
+    return $success;
+  }
+
+  /**
+   * Determines whether an item is present in the cache.
+   *
+   * NOTE: It is recommended that has() is only to be used for cache warming type purposes
+   * and not to be used within your live applications operations for get/set, as this method
+   * is subject to a race condition where your has() will return true and immediately after,
+   * another script can remove it making the state of your app out of date.
+   *
+   * @param string $key The cache item key.
+   *
+   * @return bool
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function has($key): bool
+  {
+    $keyOriginal = $key;
+    $key = $this->_generateKey($key);
+    $this->_validateKey($key);
+    $path = $this->_getPath($key);
+
+    if(!$this->_checkFileIsNotAtEndOfLife($path, $keyOriginal))
     {
-        $files   = array_diff(scandir($this->_directoryPath), ['.', '..', '.*']);
-        $success = true;
-
-        foreach ($files as $file) {
-            $success = unlink($this->_directoryPath . $file) && $success;
-        }
-
-        return $success;
+      return false;
     }
 
-    /**
-     * Obtains multiple cache items by their unique keys.
-     *
-     * @param iterable $keys    A list of keys that can obtained in a single operation.
-     * @param mixed    $default Default value to return for keys that do not exist.
-     *
-     * @return iterable A list of key => value pairs. Cache keys that do not exist or are stale will have $default as
-     *                  value.
-     *
-     * @throws InvalidArgumentException
-     *   MUST be thrown if $keys is neither an array nor a Traversable,
-     *   or if any of the $keys are not a legal value.
-     */
-    public function getMultiple($keys, $default = null)
+    return file_exists($path);
+  }
+
+  /**
+   * Check to see if the key TTL hasn't ran dry.
+   * Deletes the file if the file has expired
+   *
+   * @param string $path
+   *
+   * @param string $key
+   *
+   * @return bool
+   */
+  protected function _checkFileIsNotAtEndOfLife(string $path, string $key): bool
+  {
+    if(!file_exists($path))
     {
-        // TODO: Implement getMultiple() method.
+      return false;
     }
 
-    /**
-     * Persists a set of key => value pairs in the cache, with an optional TTL.
-     *
-     * @param iterable              $values  A list of key => value pairs for a multiple-set operation.
-     * @param null|int|DateInterval $ttl     Optional. The TTL value of this item. If no value is sent and
-     *                                       the driver supports TTL then the library may set a default value
-     *                                       for it or let the driver take care of that.
-     *
-     * @return bool True on success and false on failure.
-     *
-     * @throws InvalidArgumentException
-     *   MUST be thrown if $values is neither an array nor a Traversable,
-     *   or if any of the $values are not a legal value.
-     */
-    public function setMultiple($values, $ttl = null)
-    {
-        // TODO: Implement setMultiple() method.
-    }
+    $timestamp = filemtime($path);
+    $time = time();
 
-    /**
-     * Deletes multiple cache items in a single operation.
-     *
-     * @param iterable $keys A list of string-based keys to be deleted.
-     *
-     * @return bool True if the items were successfully removed. False if there was an error.
-     *
-     * @throws InvalidArgumentException
-     *   MUST be thrown if $keys is neither an array nor a Traversable,
-     *   or if any of the $keys are not a legal value.
-     */
-    public function deleteMultiple($keys)
+    if($timestamp <= $time)
     {
-        // TODO: Implement deleteMultiple() method.
-    }
+      $this->delete($key);
 
-    /**
-     * Determines whether an item is present in the cache.
-     *
-     * NOTE: It is recommended that has() is only to be used for cache warming type purposes
-     * and not to be used within your live applications operations for get/set, as this method
-     * is subject to a race condition where your has() will return true and immediately after,
-     * another script can remove it making the state of your app out of date.
-     *
-     * @param string $key The cache item key.
-     *
-     * @return bool
-     *
-     * @throws InvalidArgumentException
-     *   MUST be thrown if the $key string is not a legal value.
-     */
-    public function has($key): bool
-    {
-        $keyOriginal = $key;
-        $key         = $this->_generateKey($key);
-        $this->_validateKey($key);
-        $path = $this->_getPath($key);
-
-        if (!$this->_checkFileIsNotAtEndOfLife($path, $keyOriginal)) {
-            return false;
-        }
-
-        return file_exists($path);
+      return false;
     }
 
-    /**
-     * Check to see if the key TTL hasn't ran dry.
-     * Deletes the file if the file has expired
-     *
-     * @param string $path
-     *
-     * @param string $key
-     *
-     * @return bool
-     */
-    protected function _checkFileIsNotAtEndOfLife(string $path, string $key): bool
-    {
-        if (!file_exists($path)) {
-            return false;
-        }
-
-        $timestamp = filemtime($path);
-        $time      = time();
-
-        if ($timestamp <= $time) {
-            $this->delete($key);
-
-            return false;
-        }
-
-        return true;
-    }
+    return true;
+  }
+
+  /**
+   * Delete an item from the cache by its unique key.
+   *
+   * @param string $key The unique cache key of the item to delete.
+   *
+   * @return bool True if the item was successfully removed. False if there was an error.
+   *
+   * @throws InvalidArgumentException
+   *   MUST be thrown if the $key string is not a legal value.
+   */
+  public function delete($key): bool
+  {
+    $key = $this->_generateKey($key);
+    $path = $this->_getPath($key);
+    $this->_validateKey($key);
+
+    return unlink($path);
+  }
 }