1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (https://nette.org)
 5:  * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 6:  */
 7: 
 8: namespace Nette\Caching;
 9: 
10: 
11: /**
12:  * Cache storage.
13:  */
14: interface IStorage
15: {
16: 
17:     /**
18:      * Read from cache.
19:      * @param  string key
20:      * @return mixed|NULL
21:      */
22:     function read($key);
23: 
24:     /**
25:      * Prevents item reading and writing. Lock is released by write() or remove().
26:      * @param  string key
27:      * @return void
28:      */
29:     function lock($key);
30: 
31:     /**
32:      * Writes item into the cache.
33:      * @param  string key
34:      * @param  mixed  data
35:      * @param  array  dependencies
36:      * @return void
37:      */
38:     function write($key, $data, array $dependencies);
39: 
40:     /**
41:      * Removes item from the cache.
42:      * @param  string key
43:      * @return void
44:      */
45:     function remove($key);
46: 
47:     /**
48:      * Removes items from the cache by conditions.
49:      * @param  array  conditions
50:      * @return void
51:      */
52:     function clean(array $conditions);
53: 
54: }
55: