visualizer / vendor / psr / simple-cache / src / CacheInterface.php

CacheInterface.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 3.3.4, at vendor/psr/simple-cache/src/CacheInterface.php

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1	<?php
2
3	namespace Psr\SimpleCache;
4
5	interface CacheInterface
6	{
7	/**
8	* Fetches a value from the cache.
9	*
10	* @param string $key The unique key of this item in the cache.
11	* @param mixed $default Default value to return if the key does not exist.
12	*
13	* @return mixed The value of the item from the cache, or $default in case of cache miss.
14	*
15	* @throws \Psr\SimpleCache\InvalidArgumentException
16	* MUST be thrown if the $key string is not a legal value.
17	*/
18	public function get($key, $default = null);
19
20	/**
21	* Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
22	*
23	* @param string $key The key of the item to store.
24	* @param mixed $value The value of the item to store, must be serializable.
25	* @param null\|int\|\DateInterval $ttl Optional. The TTL value of this item. If no value is sent and
26	* the driver supports TTL then the library may set a default value
27	* for it or let the driver take care of that.
28	*
29	* @return bool True on success and false on failure.
30	*
31	* @throws \Psr\SimpleCache\InvalidArgumentException
32	* MUST be thrown if the $key string is not a legal value.
33	*/
34	public function set($key, $value, $ttl = null);
35
36	/**
37	* Delete an item from the cache by its unique key.
38	*
39	* @param string $key The unique cache key of the item to delete.
40	*
41	* @return bool True if the item was successfully removed. False if there was an error.
42	*
43	* @throws \Psr\SimpleCache\InvalidArgumentException
44	* MUST be thrown if the $key string is not a legal value.
45	*/
46	public function delete($key);
47
48	/**
49	* Wipes clean the entire cache's keys.
50	*
51	* @return bool True on success and false on failure.
52	*/
53	public function clear();
54
55	/**
56	* Obtains multiple cache items by their unique keys.
57	*
58	* @param iterable $keys A list of keys that can obtained in a single operation.
59	* @param mixed $default Default value to return for keys that do not exist.
60	*
61	* @return iterable A list of key => value pairs. Cache keys that do not exist or are stale will have $default as value.
62	*
63	* @throws \Psr\SimpleCache\InvalidArgumentException
64	* MUST be thrown if $keys is neither an array nor a Traversable,
65	* or if any of the $keys are not a legal value.
66	*/
67	public function getMultiple($keys, $default = null);
68
69	/**
70	* Persists a set of key => value pairs in the cache, with an optional TTL.
71	*
72	* @param iterable $values A list of key => value pairs for a multiple-set operation.
73	* @param null\|int\|\DateInterval $ttl Optional. The TTL value of this item. If no value is sent and
74	* the driver supports TTL then the library may set a default value
75	* for it or let the driver take care of that.
76	*
77	* @return bool True on success and false on failure.
78	*
79	* @throws \Psr\SimpleCache\InvalidArgumentException
80	* MUST be thrown if $values is neither an array nor a Traversable,
81	* or if any of the $values are not a legal value.
82	*/
83	public function setMultiple($values, $ttl = null);
84
85	/**
86	* Deletes multiple cache items in a single operation.
87	*
88	* @param iterable $keys A list of string-based keys to be deleted.
89	*
90	* @return bool True if the items were successfully removed. False if there was an error.
91	*
92	* @throws \Psr\SimpleCache\InvalidArgumentException
93	* MUST be thrown if $keys is neither an array nor a Traversable,
94	* or if any of the $keys are not a legal value.
95	*/
96	public function deleteMultiple($keys);
97
98	/**
99	* Determines whether an item is present in the cache.
100	*
101	* NOTE: It is recommended that has() is only to be used for cache warming type purposes
102	* and not to be used within your live applications operations for get/set, as this method
103	* is subject to a race condition where your has() will return true and immediately after,
104	* another script can remove it making the state of your app out of date.
105	*
106	* @param string $key The cache item key.
107	*
108	* @return bool
109	*
110	* @throws \Psr\SimpleCache\InvalidArgumentException
111	* MUST be thrown if the $key string is not a legal value.
112	*/
113	public function has($key);
114	}
115