## Cache
~~~php
// 获取缓存对象，约等于 Cache
cache()
// 注意 5.8 缓存单位为「秒」，之前版本为「分」
Cache::put('key', 'value', $seconds);
// 未设置过期时间将永久有效
Cache::put('key', 'value');
Cache::add('key', 'value', $seconds);
Cache::forever('key', 'value');
Cache::sear('key', function(){ return 'value' });
Cache::remember('key', $seconds, function(){ return 'value' });
Cache::rememberForever('key', function(){ return 'value' });
Cache::forget('key');
Cache::has('key');
Cache::get('key');
Cache::get('key', 'default');
Cache::get('key', function(){ return 'default'; });
// 取到数据之后再删除它
Cache::pull('key');
// 清空所有缓存
Cache::flush();
Cache::increment('key');
Cache::increment('key', $amount);
Cache::decrement('key');
Cache::decrement('key', $amount);
Cache::tags('my-tag')->put('key','value', $seconds);
Cache::tags('my-tag')->has('key');
Cache::tags('my-tag')->get('key');
Cache::tags(['people', 'artists'])->put('John', $john, $seconds);
Cache::tags('my-tag')->forget('key');
Cache::tags('my-tag')->flush();
Cache::tags(['people', 'authors'])->flush();
Cache::section('group')->put('key', $value);
Cache::section('group')->get('key');
Cache::section('group')->flush();
Cache::tags(['people', 'artists'])->put('John', $john, $seconds);
// 辅助函数
cache('key');
cache(['key' => 'value'], $seconds);
cache(['key' => 'value'], now()->addMinutes(10));
cache()->remember('users', $seconds, function() { return User::all(); });
// 指定缓存存储
Cache::store('file')->get('foo');
Cache::store('redis')->put('name', 'Jack', 600); // 10 分钟
// 事件
'Illuminate\Cache\Events\CacheHit' => ['App\Listeners\LogCacheHit',],
'Illuminate\Cache\Events\CacheMissed' => ['App\Listeners\LogCacheMissed',],
'Illuminate\Cache\Events\KeyForgotten' => ['App\Listeners\LogKeyForgotten',],
'Illuminate\Cache\Events\KeyWritten' => ['App\Listeners\LogKeyWritten',],
~~~
