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:  * @author     David Grudl
15:  */
16: interface IStorage
17: {
18: 
19:     /**
20:      * Read from cache.
21:      * @param  string key
22:      * @return mixed|NULL
23:      */
24:     function read($key);
25: 
26:     /**
27:      * Prevents item reading and writing. Lock is released by write() or remove().
28:      * @param  string key
29:      * @return void
30:      */
31:     function lock($key);
32: 
33:     /**
34:      * Writes item into the cache.
35:      * @param  string key
36:      * @param  mixed  data
37:      * @param  array  dependencies
38:      * @return void
39:      */
40:     function write($key, $data, array $dependencies);
41: 
42:     /**
43:      * Removes item from the cache.
44:      * @param  string key
45:      * @return void
46:      */
47:     function remove($key);
48: 
49:     /**
50:      * Removes items from the cache by conditions.
51:      * @param  array  conditions
52:      * @return void
53:      */
54:     function clean(array $conditions);
55: 
56: }
57: