Change the default to 10 to match previous behavior

src/Cache/Engine/RedisEngine.php

@@ -47,7 +47,7 @@ class RedisEngine extends CacheEngine
      * - `port` port number to the Redis server.
      * - `prefix` Prefix appended to all entries. Good for when you need to share a keyspace
      *    with either another cache config or another application.
-     * - `scan_count` Number of keys to ask for each scan (default: 100)
+     * - `scan_count` Number of keys to ask for each scan (default: 10)
      * - `server` URL or IP to the Redis server host.
      * - `timeout` timeout in seconds (float).
      * - `unix_socket` Path to the unix socket file (default: false)
@@ -66,7 +66,7 @@ class RedisEngine extends CacheEngine
         'server' => '127.0.0.1',
         'timeout' => 0,
         'unix_socket' => false,
-        'scan_count' => 100,
+        'scan_count' => 10,
     ];
 
     /**

tests/TestCase/Cache/Engine/RedisEngineTest.php

@@ -97,7 +97,7 @@ class RedisEngineTest extends TestCase
             'database' => 0,
             'unix_socket' => false,
             'host' => null,
-            'scan_count' => 100,
+            'scan_count' => 10,
         ];
         $this->assertEquals($expecting, $config);
     }
@@ -125,7 +125,7 @@ class RedisEngineTest extends TestCase
             'unix_socket' => false,
             'host' => 'localhost',
             'scheme' => 'redis',
-            'scan_count' => 100,
+            'scan_count' => 10,
         ];
         $this->assertEquals($expecting, $config);