Используем в качестве компонента для соединения с редисом библиотеку Predis

common/components/Redis/Key.php

@@ -0,0 +1,58 @@
+<?php
+namespace common\components\Redis;
+
+use InvalidArgumentException;
+use Yii;
+
+class Key {
+
+    protected $key;
+
+    /**
+     * @return \yii\redis\Connection
+     */
+    public function getRedis() {
+        return Yii::$app->redis;
+    }
+
+    public function getKey() {
+        return $this->key;
+    }
+
+    public function getValue() {
+        return json_decode($this->getRedis()->get($this->key), true);
+    }
+
+    public function setValue($value) {
+        $this->getRedis()->set($this->key, json_encode($value, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));
+        return $this;
+    }
+
+    public function delete() {
+        $this->getRedis()->executeCommand('DEL', [$this->key]);
+        return $this;
+    }
+
+    public function expire($ttl) {
+        $this->getRedis()->executeCommand('EXPIRE', [$this->key, $ttl]);
+        return $this;
+    }
+
+    private function buildKey(array $parts) {
+        $keyParts = [];
+        foreach($parts as $part) {
+            $keyParts[] = str_replace('_', ':', $part);
+        }
+
+        return implode(':', $keyParts);
+    }
+
+    public function __construct(...$key) {
+        if (empty($key)) {
+            throw new InvalidArgumentException('You must specify at least one key.');
+        }
+
+        $this->key = $this->buildKey($key);
+    }
+
+}