Se agrega servicio de redis. Con el tiempo se van a añadir nuevas

funcionalidades, se probó en modo cluster y funciona correctamente.

Resources/config/services.yml

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+services:
+
+    redis:
+        class: RedisBundle\Services\RedisService

Services/CollectorInterface.php

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+<?php
+
+namespace RedisBundle\Services;
+
+interface CollectorInterface
+{
+    public function get($key);
+    
+    public function set($key, $data);
+}

Services/RedisService.php

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+<?php
+
+namespace RedisBundle\Services;
+
+use Predis\Client as Redis;
+
+class RedisService extends Redis implements CollectorInterface
+{
+    public function setOptions($options)
+    {
+        $this->options = $this->createOptions($options ?: array());
+        $this->profile = $this->options->profile;
+    }
+
+    public function setConnection($parameters)
+    {
+        $this->connection = $this->createConnection($parameters ?: array());
+    }
+
+    /**
+     * @param string $key
+     * @return array
+     */
+    public function get($key, $output = false)
+    {
+        $start = microtime(true);
+        $_data = parent::get($key);
+        $end = microtime(true);
+        $t = $end - $start;
+        if ($output) {
+            print_r("REDIS GET key '{$key}': {$t} segundos" . PHP_EOL);
+        }
+
+        $start = microtime(true);
+        $data_cached = json_decode($_data, true);
+        $end = microtime(true);
+        $t = $end - $start;
+        if ($output) {
+            print_r("DECODE key '{$key}': {$t} segundos" . PHP_EOL);
+        }
+        
+        parent::disconnect();
+        parent::quit();
+
+        return $data_cached;
+    }
+
+    /**
+     * @param string $key
+     * @param array $data
+     */
+    public function set($key, $data, $output = false)
+    {
+        $start = microtime(true);
+        $_save = json_encode($data);
+        $end = microtime(true);
+        $t = $end - $start;
+        if ($output) {
+            print_r("ENCODE key '{$key}': {$t} segundos" . PHP_EOL);
+        }
+
+        $start = microtime(true);
+        parent::setex($key, 3600, $_save);
+        $end = microtime(true);
+        $t = $end - $start;
+        if ($output) {
+            print_r("SETEX key '{$key}': {$t} segundos" . PHP_EOL);
+        }
+    }
+
+    /**
+     * @param string $key
+     * @return string
+     */
+    public function getString($key, $output = false)
+    {
+        $start = microtime(true);
+        $_data = parent::get($key);
+        $end = microtime(true);
+        $t = $end - $start;
+        if ($output) {
+            print_r("REDIS GET key '{$key}': {$t} segundos" . PHP_EOL);
+        }
+
+        parent::disconnect();
+        parent::quit();
+
+        return $_data;
+    }
+}