Added logger.

zh/db/model-cache.md

@@ -12,10 +12,10 @@ composer require hyperf/model-cache
 
 模型缓存的配置在 `databases` 中。示例如下
 
-|    配置      |  类型  |                         默认值                          |                备注                 |
+|    配置     |  类型  |                         默认值                         |                备注                 |
 |:-----------:|:------:|:------------------------------------------------------:|:-----------------------------------:|
 |   handler   | string | \Hyperf\DbConnection\Cache\Handler\RedisHandler::class |                 无                  |
-|  cache_key  | string |                   'mc:%s:m:%s:%s:%s'                   |  mc:缓存前缀:m:表名:主键KEY:主键值  |
+|  cache_key  | string |                  'mc:%s:m :%s:%s:%s'                   | mc:缓存前缀:m :表名:主键KEY:主键值  |
 |   prefix    | string |                   db connection name                   |              缓存前缀               |
 |     ttl     |  int   |                          3600                          |              超时时间               |
 | load_script |  bool  |                          true                          | Redis引擎下 是否使用evalSha代替eval |

zh/logger.md

@@ -0,0 +1,66 @@
+# 日志
+
+`hyperf/logger` 组件对 [monolog/monolog](https://github.com/Seldaek/monolog) 进行了封装，默认使用 `Monolog\Handler\StreamHandler`, Swoole 已经对 `fopen`, `fwrite` 等方法进行了协程化，所以只要不将 `useLocking` 设置为true，就不会阻塞协程。
+
+## 安装
+
+```
+composer require hyperf/logger
+```
+
+## 配置
+
+模型缓存的配置在 `logger` 中。示例如下
+
+```php
+<?php
+
+return [
+    'default' => [
+        'handler' => [
+            'class' => \Monolog\Handler\StreamHandler::class,
+            'constructor' => [
+                'stream' => BASE_PATH . '/runtime/logs/hyperf.log',
+                'level' => \Monolog\Logger::DEBUG,
+            ],
+        ],
+        'formatter' => [
+            'class' => \Monolog\Formatter\LineFormatter::class,
+            'constructor' => [
+                'format' => null,
+                'dateFormat' => null,
+                'allowInlineLineBreaks' => true,
+            ]
+        ],
+    ],
+];
+```
+
+## 使用
+
+```php
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use Psr\Container\ContainerInterface;
+use Hyperf\Logger\LoggerFactory;
+
+class DemoService
+{
+    protected $logger;
+
+    public function __construct(ContainerInterface $container)
+    {
+        $this->logger =  $container->get(LoggerFactory::class)->get('logname');
+    }
+
+    public function method()
+    {
+        // Do somthing.
+        $this->logger->info("Your log message.");
+    }
+}
+```