Created RedisFactory which will create the redis adapter for the redis lock

composer.json

@@ -31,6 +31,7 @@
         "monolog/monolog": "^1.21",
         "ocramius/proxy-manager": "^2.0",
         "phly/phly-event-dispatcher": "^1.0",
+        "predis/predis": "^1.1",
         "shlinkio/shlink-installer": "^1.2.1",
         "symfony/console": "^4.3",
         "symfony/filesystem": "^4.3",

config/autoload/locks.global.php

@@ -1,6 +1,7 @@
 <?php
 declare(strict_types=1);
 
+use Shlinkio\Shlink\Common\Cache\RedisFactory;
 use Symfony\Component\Lock;
 use Zend\ServiceManager\AbstractFactory\ConfigAbstractFactory;
 
@@ -13,13 +14,20 @@ return [
     'dependencies' => [
         'factories' => [
             Lock\Store\FlockStore::class => ConfigAbstractFactory::class,
+            Lock\Store\RedisStore::class => ConfigAbstractFactory::class,
             Lock\Factory::class => ConfigAbstractFactory::class,
         ],
+        'aliases' => [
+            // With this config, a user could alias 'lock_store' => 'redis_lock_store' to override the default
+            'lock_store' => Lock\Store\FlockStore::class,
+            'redis_lock_store' => Lock\Store\RedisStore::class,
+        ],
     ],
 
     ConfigAbstractFactory::class => [
         Lock\Store\FlockStore::class => ['config.locks.locks_dir'],
-        Lock\Factory::class => [Lock\Store\FlockStore::class],
+        Lock\Store\RedisStore::class => [RedisFactory::SERVICE_NAME],
+        Lock\Factory::class => ['lock_store'],
     ],
 
 ];

config/autoload/redis.local.php.local

@@ -0,0 +1,13 @@
+<?php
+declare(strict_types=1);
+
+return [
+
+    'redis' => [
+        'servers' => 'tcp://shlink_redis:6379',
+//        'servers' => [
+//            'tcp://shlink_redis:6379',
+//        ],
+    ],
+
+];

module/Common/config/cache.config.php

@@ -0,0 +1,17 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Common;
+
+use Doctrine\Common\Cache as DoctrineCache;
+
+return [
+
+    'dependencies' => [
+        'factories' => [
+            DoctrineCache\Cache::class => Cache\CacheFactory::class,
+            Cache\RedisFactory::SERVICE_NAME => Cache\RedisFactory::class,
+        ],
+    ],
+
+];

module/Common/config/dependencies.config.php

@@ -3,7 +3,6 @@ declare(strict_types=1);
 
 namespace Shlinkio\Shlink\Common;
 
-use Doctrine\Common\Cache as DoctrineCache;
 use GeoIp2\Database\Reader;
 use GuzzleHttp\Client as GuzzleClient;
 use Monolog\Logger;
@@ -20,7 +19,6 @@ return [
     'dependencies' => [
         'factories' => [
             GuzzleClient::class => InvokableFactory::class,
-            DoctrineCache\Cache::class => Cache\CacheFactory::class,
             Filesystem::class => InvokableFactory::class,
             Reader::class => ConfigAbstractFactory::class,
 

module/Common/src/Cache/RedisFactory.php

@@ -0,0 +1,30 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Common\Cache;
+
+use Predis\Client as PredisClient;
+use Psr\Container\ContainerInterface;
+
+use function array_shift;
+use function count;
+use function is_array;
+use function is_string;
+
+class RedisFactory
+{
+    public const SERVICE_NAME = 'Shlinkio\Shlink\Common\Cache\Redis';
+
+    public function __invoke(ContainerInterface $container): PredisClient
+    {
+        $redisConfig = $container->get('config')['redis'] ?? [];
+        $servers = $redisConfig['servers'];
+
+        if (is_array($servers) && count($servers) === 1) {
+            $servers = array_shift($servers);
+        }
+
+        $options = is_string($servers) ? null : ['cluster' => 'redis'];
+        return new PredisClient($servers, $options);
+    }
+}