diff --git a/src/Site/Controller/Op.php b/src/Site/Controller/Op.php
index e2c87cc..58c2f33 100644
--- a/src/Site/Controller/Op.php
+++ b/src/Site/Controller/Op.php
@@ -99,6 +99,7 @@ class Op {
       $tmpl->assign('data', $data->data);
 
       $tmpl->addCss('table');
+      $tmpl->addCss('openprovider');
       $tmpl->render('listcustomers');
       exit();
 
@@ -115,7 +116,11 @@ class Op {
         'additional_data' => [
           'company_registration_number' => $_POST['company_registration_number'] ?? '',
           'company_url' => $_POST['company_url'] ?? '',
-          'birth_date' => $_POST['birth_year'] !== '' && $_POST['birth_month'] !== '' && $_POST['birth_day'] !== '' ? $_POST['birth_year'].'-'.$_POST['birth_month'].'-'.$_POST['birth_day'] : '',
+          'birth_date' => (isset($_POST['birth_year']) && $_POST['birth_year'] !== '')
+                       && (isset($_POST['birth_month']) && $_POST['birth_month'] !== '')
+                       && (isset($_POST['birth_day']) && $_POST['birth_day'] !== '')
+                       ? $_POST['birth_year'].'-'.$_POST['birth_month'].'-'.$_POST['birth_day']
+                       : '',
           'trading_name' => $_POST['company_name'] ?? '',
         ],
         'address' => [
@@ -142,7 +147,10 @@ class Op {
         'locale' => 'ja_JP',
         'name' => [
           'first_name' => $_POST['first_name'] ?? '',
-          'full_name' => $_POST['first_name'] !== '' && $_POST['last_name'] !== '' ? $_POST['first_name'].' '.$_POST['last_name'] : '',
+          'full_name' => (isset($_POST['first_name']) && $_POST['first_name'] !== '')
+                       && (isset($_POST['last_name']) && $_POST['last_name'] !== '')
+                       ? $_POST['first_name'].' '.$_POST['last_name']
+                       : '',
           'last_name' => $_POST['last_name'] ?? '',
         ],
         'phone' => [
diff --git a/src/Std/Lib/Cache.php b/src/Std/Lib/Cache.php
new file mode 100644
index 0000000..098ddbd
--- /dev/null
+++ b/src/Std/Lib/Cache.php
@@ -0,0 +1,118 @@
+<?php
+/*************************************************************
+# 076 License
+
+Copyright (c) テクニカル諏訪子
+
+Permission is hereby granted to any person obtaining a copy of the software
+Little Beast (the "Software") to use, modify, merge, copy, publish, distribute,
+sublicense, and/or sell copies of the Software, subject to the following conditions:
+
+    1. **Origin Attribution**:
+       - You must not misrepresent the origin of the Software; you must not claim
+         you created the original Software.
+       - If the Software is used in a product, you must either:
+         a. Provide clear attribution in the product's documentation, user interface,
+            or other visible areas, **OR**
+         b. Pay the original developers a fee they specify in writing.
+    2. **Usage Restriction**:
+       - The Software, or any derivative works, dependencies, or libraries
+         incorporating it, must not be used for censorship or to suppress freedom of
+         speech, expression, or creativity. Prohibited uses include, but are not
+         limited to:
+         - Censorship of so-called "hate speech", visuals, non-mainstream opinions,
+           ideas, or objective reality.
+         - Tools or systems designed to restrict access to information or
+           artistic works.
+    3. **Notice Preservation**:
+       - This license and the above copyright notice must remain intact in all copies
+         of the source code.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+namespace Std\Lib;
+
+use Result;
+
+/**
+ * キャッシュ
+ */
+class Cache {
+  private string $dataDir;
+  protected int $dataDuration = 1800; // 30分
+
+  public function __construct(string $dataDir) {
+    $this->dataDir = $dataDir;
+  }
+
+  /**
+   * キャッシュの作成
+   *
+   * @param string $type  キャッシュ類（例：login、domainlist等）
+   * @param array $data  保存するデータ
+   * @return Result
+   */
+  public function set(string $type, array $data): Result {
+    if (!file_exists($this->dataDir)) {
+      if (!mkdir($this->dataDir, 0755))
+        return Result::Error('エラー：ユーザーのアイコンディレクトリの作成に失敗。');
+    }
+
+    $data['lifespan'] = time();
+    $json = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    if (file_put_contents("{$this->dataDir}{$type}.json", $json) === false) return Result::Error('エラー：ユーザーデータの保存に失敗。');
+
+    return Result::Success();
+  }
+
+  /**
+   * キャッシュから受け取り
+   *
+   * @param string $type  キャッシュ類（例：login、domainlist等）
+   * @return array
+   */
+  public function get(string $type): array {
+    if (!file_exists("{$this->dataDir}{$type}.json")) return [];
+
+    $content = file_get_contents("{$this->dataDir}{$type}.json");
+    if ($content === false) return [];
+
+    $data = json_decode($content, true);
+    if (json_last_error() !== JSON_ERROR_NONE || !is_array($data)) return [];
+
+    return $data;
+  }
+
+  /**
+   * キャッシュを破壊する
+   *
+   * @param string $name  キャッシュのファイル名
+   * @return Result
+   */
+  public function murder(string $name): Result {
+    if (!file_exists("{$this->dataDir}{$name}.json")) return Result::Error('キャッシュファイルが存在しない。');
+    if (!unlink("{$this->dataDir}{$name}.json")) return Result::Error('キャッシュファイルの削除に失敗。');
+    return Result::Success();
+  }
+
+  /**
+   * キャッシュ有効期限の確認
+   *
+   * @param array $cache
+   * @param mixed $data  デフォルト＝null
+   * @param string $dataPoint  デフォルト＝query
+   * @return bool
+   */
+  public function validate(array $cache, mixed $data = null, string $dataPoint = 'query'): bool {
+    if (NULL === $data) return (!empty($cache) && (isset($cache['lifespan']) && time() < ($cache['lifespan'] + $this->dataDuration)));
+    else return (!empty($cache)
+             && (isset($cache[$dataPoint])
+             && $cache[$dataPoint] === $data)
+             && (isset($cache['lifespan']) && time() < ($cache['lifespan'] + $this->dataDuration)));
+  }
+}
\ No newline at end of file
diff --git a/src/Std/Lib/Openprovider.php b/src/Std/Lib/Openprovider.php
index 53ab32d..d1e8e4b 100644
--- a/src/Std/Lib/Openprovider.php
+++ b/src/Std/Lib/Openprovider.php
@@ -37,14 +37,15 @@ OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 namespace Std\Lib;
 
+use Std\Lib\Cache;
 use Std\Lib\Curl;
 use Result;
 
 class Openprovider {
-  protected string $dataDir = ROOT."/data/cache/openprovider/";
+  protected string $cacheDir = ROOT."/data/cache/openprovider/";
   protected int $tokenDuration = 172800; // 48時間
-  protected int $dataDuration = 1800; // 30分
 
+  private Cache $cache;
   private string $user = '';
   private string $pass = '';
   private string $token = '';
@@ -59,6 +60,7 @@ class Openprovider {
     $this->user = OPENPROVIDER['username'];
     $this->pass = OPENPROVIDER['password'];
     $this->ip = OPENPROVIDER['ip'];
+    $this->cache = new Cache($this->cacheDir);
   }
 
   /**
@@ -70,7 +72,7 @@ class Openprovider {
   public function login(): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'login';
-    $cache = $this->getCache($cacheName);
+    $cache = $this->cache->get($cacheName);
     if (time() < ($this->lastAuth + $this->tokenDuration)) {
       $this->token = $cache['data']['token'];
       $this->lastAuth = $cache['last_auth'];
@@ -110,7 +112,7 @@ class Openprovider {
       $this->token = $res['data']['token'];
       $this->lastAuth = time();
       $res['last_auth'] = $this->lastAuth;
-      $this->setCache($cacheName, $res);
+      $this->cache->set($cacheName, $res);
 
       return Result::Success('', $res);
     }
@@ -150,14 +152,14 @@ class Openprovider {
    */
   public function listDomains(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
-    $cacheName = 'listdomains'
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cacheName = 'listdomains';
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     $curl = $this->setupCurl('/domains');
     $res = $this->curlResult($curl);
     if (isset($res['data']['results'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res['data']['results']);
     }
 
@@ -271,14 +273,14 @@ class Openprovider {
     if (isset($query['domain.extension'])) $ext = $query['domain.extension'];
     $cacheName = $name && $ext ? "domainadditionaldata-{$name}.{$ext}" : 'domainadditionaldata';
 
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     $uri = "/domains/additional-data?".http_build_query($query, '', '&', PHP_QUERY_RFC3986);
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -302,14 +304,14 @@ class Openprovider {
     if (isset($query['domain.extension'])) $ext = $query['domain.extension'];
     $cacheName = $name && $ext ? "domainadditionaldata-{$name}.{$ext}" : 'domainadditionaldata';
 
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     $uri = "/domains/additional-data/customers?".http_build_query($query, '', '&', PHP_QUERY_RFC3986);
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -333,14 +335,14 @@ class Openprovider {
     if (isset($query['domain.extension'])) $ext = $query['domain.extension'];
     $cacheName = $name && $ext ? "domainprices-{$name}.{$ext}" : 'domainprices';
 
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     $uri = "/domains/prices?".http_build_query($query, '', '&', PHP_QUERY_RFC3986);
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -403,8 +405,8 @@ class Openprovider {
   public function listTlds(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listtlds';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 10, 'offset' => 0, 'order' => 'ASC' ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -413,7 +415,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -430,8 +432,8 @@ class Openprovider {
   public function getTld(string $tld, array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "gettld-{$tld}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 10, 'offset' => 0 ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -440,7 +442,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -460,8 +462,8 @@ class Openprovider {
   public function listInvoices(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listinvoices';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 10, 'offset' => 0 ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -470,7 +472,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -489,8 +491,8 @@ class Openprovider {
   public function listPayments(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listpayments';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 10, 'offset' => 0 ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -499,7 +501,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -518,8 +520,8 @@ class Openprovider {
   public function listTransactions(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listtransactions';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 10, 'offset' => 0 ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -528,7 +530,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -570,8 +572,8 @@ class Openprovider {
   public function listNameservers(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listnameservers';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 25, 'offset' => 0, 'order_by.name' => 'asc' ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -580,7 +582,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -601,7 +603,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listnameservers');
+      $this->cache->murder('listnameservers');
       return Result::Success('ネームサーバーの追加に成功。', $res->data);
     }
 
@@ -619,8 +621,8 @@ class Openprovider {
   public function getNameserver(string $domain, array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "listnameserver-{$domain}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 100, 'offset' => 0, 'order_by.name' => 'asc' ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -629,7 +631,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -651,8 +653,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listnameservers');
-      $this->murderCache("listnameserver-{$domain}");
+      $this->cache->murder('listnameservers');
+      $this->cache->murder("listnameserver-{$domain}");
       if ($res->data['data']['success']) return Result::Success('ネームサーバーの更新に成功。', $res->data);
     }
 
@@ -673,8 +675,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listnameservers');
-      $this->murderCache("listnameserver-{$domain}");
+      $this->cache->murder('listnameservers');
+      $this->cache->murder("listnameserver-{$domain}");
       if ($res->data['data']['success']) return Result::Success('ネームサーバーの削除に成功。', $res->data);
     }
 
@@ -693,8 +695,8 @@ class Openprovider {
   public function listNsGroups(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listnsgroups';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 25, 'offset' => 0, 'order_by.name' => 'asc' ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -703,7 +705,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -724,7 +726,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listnsgroups');
+      $this->cache->murder('listnsgroups');
       return Result::Success('NSグループの追加に成功。', $res->data);
     }
 
@@ -742,8 +744,8 @@ class Openprovider {
   public function getNsGroup(string $nsGroup, array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "listnsgroup-{$nsGroup}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 100, 'offset' => 0, 'order_by.name' => 'asc' ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -752,7 +754,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -774,8 +776,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listnsgroups');
-      $this->murderCache("listnsgroup-{$nsGroup}");
+      $this->cache->murder('listnsgroups');
+      $this->cache->murder("listnsgroup-{$nsGroup}");
       if ($res->data['data']['success']) return Result::Success('NSグループの更新に成功。', $res->data);
     }
 
@@ -796,8 +798,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listnsgroups');
-      $this->murderCache("listnsgroup-{$nsGroup}");
+      $this->cache->murder('listnsgroups');
+      $this->cache->murder("listnsgroup-{$nsGroup}");
       if ($res->data['data']['success']) return Result::Success('NSグループの削除に成功。', $res->data);
     }
 
@@ -816,8 +818,8 @@ class Openprovider {
   public function listDnsTemplate(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listdnstemplates';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/dns/templates?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -825,7 +827,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -846,7 +848,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listdnstemplates');
+      $this->cache->murder('listdnstemplates');
       return Result::Success('DNSテンプレートの追加に成功。', $res->data);
     }
 
@@ -863,14 +865,14 @@ class Openprovider {
   public function getDnsTemplate(int $id): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "getdnstemplate-{$id}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     $uri = "/dns/templates/{$id}";
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -891,8 +893,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listdnstemplates');
-      $this->murderCache("getdnstemplate-{$id}");
+      $this->cache->murder('listdnstemplates');
+      $this->cache->murder("getdnstemplate-{$id}");
       if ($res->data['data']['success']) return Result::Success('DNSテンプレートの削除に成功。', $res->data);
     }
 
@@ -910,8 +912,8 @@ class Openprovider {
   public function listDnsZones(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listdnszones';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 25, 'offset' => 0, 'order_by.name' => 'asc' ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -920,7 +922,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -941,7 +943,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listdnszones');
+      $this->cache->murder('listdnszones');
       return Result::Success('DNSゾーンの追加に成功。', $res->data);
     }
 
@@ -958,8 +960,8 @@ class Openprovider {
   public function getDnsZone(string $domain, array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "getdnszone-{$domain}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     if (empty($query)) $query = [ 'limit' => 100, 'offset' => 0, 'order_by.name' => 'asc' ];
     foreach ($query as $k => $v) if (is_bool($v)) $query[$k] = $v ? 'true' : 'false';
@@ -968,7 +970,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -990,8 +992,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listdnszones');
-      $this->murderCache("getdnszone-{$domain}");
+      $this->cache->murder('listdnszones');
+      $this->cache->murder("getdnszone-{$domain}");
       if ($res->data['data']['success']) return Result::Success('DNSゾーンの更新に成功。', $res->data);
     }
 
@@ -1012,8 +1014,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listdnszones');
-      $this->murderCache("getdnszone-{$domain}");
+      $this->cache->murder('listdnszones');
+      $this->cache->murder("getdnszone-{$domain}");
       if ($res->data['data']['success']) return Result::Success('DNSゾーンの削除に成功。', $res->data);
     }
 
@@ -1031,13 +1033,13 @@ class Openprovider {
   public function listZoneRecords(string $domain): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "getzonerecords-{$domain}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache)) return Result::Success('', $cache);
 
     $curl = $this->setupCurl("/dns/zones/{$domain}/records");
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1060,8 +1062,8 @@ class Openprovider {
   public function listEmails(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listemails';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/emails?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1069,7 +1071,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1090,7 +1092,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listemails');
+      $this->cache->murder('listemails');
       return Result::Success('メールテンプレートの追加に成功。', $res->data);
     }
 
@@ -1112,7 +1114,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listemails');
+      $this->cache->murder('listemails');
       if ($res->data['data']['success']) return Result::Success('メールテンプレートの更新に成功。', $res->data);
     }
 
@@ -1133,7 +1135,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listemails');
+      $this->cache->murder('listemails');
       if ($res->data['data']['success']) return Result::Success('メールテンプレートの削除に成功。', $res->data);
     }
 
@@ -1155,8 +1157,8 @@ class Openprovider {
   public function listContacts(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listcontacts';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/contacts?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1164,7 +1166,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1184,7 +1186,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res)) {
-      $this->murderCache('listcontacts');
+      $this->cache->murder('listcontacts');
       return Result::Success('', $res->data);
     }
 
@@ -1201,8 +1203,8 @@ class Openprovider {
   public function getContact(int $id, bool $withAdditionalData = false): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "getcontact-{$id}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $id, 'id')) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $id, 'id')) return Result::Success('', $cache);
 
     $query = [ 'with_additional_data' => $withAdditionalData ? 'true' : 'false' ];
     $uri = "/contacts/{$id}?".http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1211,7 +1213,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['id'] = $id;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1233,8 +1235,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache("getcontact-{$id}");
-      $this->murderCache('listcontacts');
+      $this->cache->murder("getcontact-{$id}");
+      $this->cache->murder('listcontacts');
       if ($res->data['data']['success']) return Result::Success('連絡先の更新に成功。', $res->data);
     }
 
@@ -1254,8 +1256,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache("getcontact-{$id}");
-      $this->murderCache('listcontacts');
+      $this->cache->murder("getcontact-{$id}");
+      $this->cache->murder('listcontacts');
       if ($res->data['data']['success']) return Result::Success('連絡先の削除に成功。');
     }
 
@@ -1273,8 +1275,8 @@ class Openprovider {
   public function listCustomers(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listcustomers';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/customers?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1282,7 +1284,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1302,7 +1304,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res)) {
-      $this->murderCache('listcustomers');
+      $this->cache->murder('listcustomers');
       return Result::Success('', $res->data);
     }
 
@@ -1319,8 +1321,8 @@ class Openprovider {
   public function getCustomer(string $handle, bool $withAdditionalData = false): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "getcustomer-{$handle}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $handle, 'handle')) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $handle, 'handle')) return Result::Success('', $cache);
 
     $query = [ 'with_additional_data' => $withAdditionalData ? 'true' : 'false' ];
     $uri = "/customers/{$handle}?".http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1329,7 +1331,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['handle'] = $handle;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1351,7 +1353,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listcustomers');
+      $this->cache->murder('listcustomers');
+      $this->cache->murder("getcustomer-{$handle}");
       if ($res->data['data']['success']) return Result::Success('顧客様の更新に成功。', $res->data);
     }
 
@@ -1371,7 +1374,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listcustomers');
+      $this->cache->murder('listcustomers');
+      $this->cache->murder("getcustomer-{$handle}");
       if ($res->data['data']['success']) return Result::Success('顧客様の削除に成功。');
     }
 
@@ -1390,8 +1394,8 @@ class Openprovider {
   public function listEmailVerifications(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listemailverifications';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/customers/verifications/emails/domains?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1399,7 +1403,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1420,7 +1424,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', ['email' => $email, 'language' => $language, 'tag' => $tag]);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listemailverifications');
+      $this->cache->murder('listemailverifications');
       return Result::Success('メール認証の再起動に成功。', $res->data);
     }
 
@@ -1444,7 +1448,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', ['email' => $email, 'handle' => $handle, 'language' => $language, 'tag' => $tag]);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listemailverifications');
+      $this->cache->murder('listemailverifications');
       return Result::Success('メール認証の起動に成功。', $res->data);
     }
 
@@ -1463,8 +1467,8 @@ class Openprovider {
   public function getReseller(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'getreseller';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/resellers?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1472,7 +1476,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1494,7 +1498,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('getreseller');
+      $this->cache->murder('getreseller');
       if ($res->data['data']['success']) return Result::Success('リセラーの更新に成功。', $res->data);
     }
 
@@ -1512,15 +1516,15 @@ class Openprovider {
   public function listSettings(): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listsettings';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     $uri = '/resellers/settings';
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1538,15 +1542,15 @@ class Openprovider {
   public function listStatistics(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'liststatistics';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     $uri = '/resellers/statistics';
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1565,8 +1569,8 @@ class Openprovider {
   public function listTags(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listtags';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/tags?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1574,7 +1578,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1595,7 +1599,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listtags');
+      $this->cache->murder('listtags');
       return Result::Success('タグの追加に成功。', $res->data);
     }
 
@@ -1616,7 +1620,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listtags');
+      $this->cache->murder('listtags');
       if ($res->data['data']['success']) return Result::Success('タグの削除に成功。', $res->data);
     }
 
@@ -1641,7 +1645,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', $payload);
     $res = $this->curlResult($curl);
     if (isset($res)) {
-      $this->murderCache('listdomains');
+      $this->cache->murder('listdomains');
       return Result::Success('', $res->data);
     }
 
@@ -1659,8 +1663,8 @@ class Openprovider {
   public function getSeDomain(string $domain, array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "getsedomain-{$domain}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $domain, 'domain')) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $domain, 'domain')) return Result::Success('', $cache);
 
     $uri = "/spam-expert/domains/{$domain}?".http_build_query($query, '', '&', PHP_QUERY_RFC3986);
     // kys($uri);
@@ -1668,7 +1672,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['domain'] = $domain;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1690,8 +1694,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', $payload);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listdomains');
-      $this->murderCache("getsedomain-{$domain}");
+      $this->cache->murder('listdomains');
+      $this->cache->murder("getsedomain-{$domain}");
       if ($res->data['data']['success']) return Result::Success('SEDomainの更新に成功。', $res->data);
     }
 
@@ -1712,8 +1716,8 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'DELETE');
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
-      $this->murderCache('listdomains');
-      $this->murderCache("getsedomain-{$domain}");
+      $this->cache->murder('listdomains');
+      $this->cache->murder("getsedomain-{$domain}");
       if ($res->data['data']['success']) return Result::Success('SEDomainの削除に成功。');
     }
 
@@ -1734,8 +1738,8 @@ class Openprovider {
   public function listApproverEmails(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listapproveremails';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/ssl/approver-emails?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1743,7 +1747,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1811,7 +1815,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'PUT', ['id' => $id, 'approver_email' => $approverEmail]);
     $res = $this->curlResult($curl);
     if (isset($res)) {
-      $this->murderCache('listapproveremails');
+      $this->cache->murder('listapproveremails');
       return Result::Success('', $res->data);
     }
 
@@ -1832,7 +1836,7 @@ class Openprovider {
     $curl = $this->setupCurl($uri, 'POST', ['id' => $id]);
     $res = $this->curlResult($curl);
     if (isset($res)) {
-      $this->murderCache('listapproveremails');
+      $this->cache->murder('listapproveremails');
       return Result::Success('', $res->data);
     }
 
@@ -1873,8 +1877,8 @@ class Openprovider {
   public function listSslProducts(array $query = []): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = 'listsslproducts';
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $query)) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $query)) return Result::Success('', $cache);
 
     foreach ($query as $k => $v) { if (is_bool($v)) $query[$k] = $v ? 'true' : 'false'; }
     $uri = '/ssl/products?'.http_build_query($query, '', '&', PHP_QUERY_RFC3986);
@@ -1882,7 +1886,7 @@ class Openprovider {
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['query'] = $query;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1899,14 +1903,14 @@ class Openprovider {
   public function getSslProduct(int $id): Result {
     if (!OPENPROVIDER_ENABLED) return Result::error('エラー：OpenProviderは無効です。');
     $cacheName = "getsslproduct-{$id}";
-    $cache = $this->getCache($cacheName);
-    if ($this->isValidLifespan($cache, $id, 'id')) return Result::Success('', $cache);
+    $cache = $this->cache->get($cacheName);
+    if ($this->cache->validate($cache, $id, 'id')) return Result::Success('', $cache);
     // kys($uri);
     $curl = $this->setupCurl($uri);
     $res = $this->curlResult($curl);
     if (isset($res->data['data'])) {
       $res->data['id'] = $id;
-      $this->setCache($cacheName, $res->data);
+      $this->cache->set($cacheName, $res->data);
       return Result::Success('', $res->data);
     }
 
@@ -1968,75 +1972,4 @@ class Openprovider {
 
     return Result::Success('', json_decode($body, true));
   }
-
-  /**
-   * キャッシュの作成
-   *
-   * @param string $type  キャッシュ類（例：login、domainlist等）
-   * @param array $data  保存するデータ
-   * @return Result
-   */
-  private function setCache(string $type, array $data): Result {
-    if (!file_exists($this->dataDir)) {
-      if (!mkdir($this->dataDir, 0755))
-        return Result::Error('エラー：ユーザーのアイコンディレクトリの作成に失敗。');
-    }
-
-    $data['lifespan'] = time();
-    $json = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
-    if (file_put_contents("{$this->dataDir}{$type}.json", $json) === false) return Result::Error('エラー：ユーザーデータの保存に失敗。');
-
-    return Result::Success();
-  }
-
-  /**
-   * キャッシュから受け取り
-   *
-   * @param string $type  キャッシュ類（例：login、domainlist等）
-   * @return array
-   */
-  private function getCache(string $type): array {
-    if (!file_exists("{$this->dataDir}{$type}.json")) return [];
-
-    $content = file_get_contents("{$this->dataDir}{$type}.json");
-    if ($content === false) return [];
-
-    $data = json_decode($content, true);
-    if (json_last_error() !== JSON_ERROR_NONE || !is_array($data)) return [];
-
-    if ($type === 'login') {
-      $this->token = $data['data']['token'];
-      $this->lastAuth = $data['last_auth'];
-    }
-
-    return $data;
-  }
-
-  /**
-   * キャッシュを破壊する
-   *
-   * @param string $name  キャッシュのファイル名
-   * @return Result
-   */
-  private function murderCache(string $name): Result {
-    if (!file_exists("{$this->dataDir}{$name}.json")) return Result::Error('キャッシュファイルが存在しない。');
-    if (!unlink("{$this->dataDir}{$name}.json")) return Result::Error('キャッシュファイルの削除に失敗。');
-    return Result::Success();
-  }
-
-  /**
-   * キャッシュ有効期限の確認
-   *
-   * @param array $cache
-   * @param mixed $data  デフォルト＝null
-   * @param string $dataPoint  デフォルト＝query
-   * @return bool
-   */
-  private function isValidLifespan(array $cache, mixed $data = null, string $dataPoint = 'query'): bool {
-    if (NULL === $data) return (!empty($cache) && (isset($cache['lifespan']) && time() < ($cache['lifespan'] + $this->dataDuration)));
-    else return (!empty($cache)
-             && (isset($cache[$dataPoint])
-             && $cache[$dataPoint] === $data)
-             && (isset($cache['lifespan']) && time() < ($cache['lifespan'] + $this->dataDuration)));
-  }
 }
\ No newline at end of file
diff --git a/view/openprovider/createcustomer.maron b/view/openprovider/createcustomer.maron
index ac579d4..6e5ef22 100644
--- a/view/openprovider/createcustomer.maron
+++ b/view/openprovider/createcustomer.maron
@@ -108,5 +108,4 @@
           <button>送信</button>
         </form>
       </p>
-      {@ kys($data) @}
 {@ include(common/footer) @}
\ No newline at end of file
diff --git a/view/openprovider/listcustomers.maron b/view/openprovider/listcustomers.maron
index ebea5b4..10ae7e8 100644
--- a/view/openprovider/listcustomers.maron
+++ b/view/openprovider/listcustomers.maron
@@ -1,5 +1,5 @@
 {@ include(common/header) @}
-      <a href="/openprovider/createcustomer">顧客様の追加</a><br />
+      <a href="/openprovider/createcustomer" class="op-button-create">顧客様の追加</a><br />
       検索<br />
 {@ if (isset($data['data']['results'])) @}
       <table>