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$users = DB::table(‘users’)

            ->where('name', 'John')
            ->cache(10) // »º´æ10·ÖÖÓ
            ->get();

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ÒªÉèÖÃÎļþ»º´æ £¬Çë·­¿ªconfig/cache.phpÎļþ £¬Äú½«¿´µ½ÒÔÏÂÄÚÈÝ£º

return [

/*
|--------------------------------------------------------------------------
| Default Cache Store
|--------------------------------------------------------------------------
|
| This option controls the default cache "store" that gets used while
| using this caching library. This connection is used when another is
| not explicitly specified when executing a given caching function.
|
| Supported: "apc", "array", "database", "file", "memcached", "redis", "dynamodb"
|
*/

'default' => env('CACHE_DRIVER', 'file'),

/*
|--------------------------------------------------------------------------
| Cache Stores
|--------------------------------------------------------------------------
|
| Here you may define all of the cache "stores" for your application as
| well as their drivers. You may even define multiple stores for the
| same driver to group types of items stored in your caches.
|
*/

'stores' => [

    'apc' => [
        'driver' => 'apc',
    ],

    'array' => [
        'driver' => 'array',
    ],

    'database' => [
        'driver' => 'database',
        'table' => 'cache',
        'connection' => null,
    ],

    'file' => [
        'driver' => 'file',
        'path' => storage_path('framework/cache/data'),
    ],

    'memcached' => [
        'driver' => 'memcached',
        'persistent_id' => env('MEMCACHED_PERSISTENT_ID'),
        'sasl' => [
            env('MEMCACHED_USERNAME'),
            env('MEMCACHED_PASSWORD'),
        ],
        'options' => [
            // Memcached::OPT_CONNECT_TIMEOUT => 2000,
        ],
        'servers' => [
            [
                'host' => env('MEMCACHED_HOST', '127.0.0.1'),
                'port' => env('MEMCACHED_PORT', 11211),
                'weight' => env('MEMCACHED_WEIGHT', 100),
            ],
        ],
    ],

    'redis' => [
        'driver' => 'redis',
        'connection' => 'cache',
    ],

],

/*
|--------------------------------------------------------------------------
| Cache Key Prefix
|--------------------------------------------------------------------------
|
| When utilizing a RAM based store such as APC or Memcached, there might
| be other applications utilizing the same cache. So, we'll specify a
| value to get prefixed to all our keys so we can avoid collisions.
|
*/

'prefix' => env('CACHE_PREFIX', Str::slug(env('APP_NAME', 'laravel'), '_').'_cache'),

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];

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