1<?php
2/**
3 * Copyright 2017 Facebook, Inc.
4 *
5 * You are hereby granted a non-exclusive, worldwide, royalty-free license to
6 * use, copy, modify, and distribute this software in source code or binary
7 * form for use in connection with the web services and APIs provided by
8 * Facebook.
9 *
10 * As with any software that integrates with the Facebook platform, your use
11 * of this software is subject to the Facebook Developer Principles and
12 * Policies [http://developers.facebook.com/policy/]. This copyright notice
13 * shall be included in all copies or substantial portions of the software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 */
24namespace Facebook\PersistentData;
25
26/**
27 * Interface PersistentDataInterface
28 *
29 * @package Facebook
30 */
31interface PersistentDataInterface
32{
33    /**
34     * Get a value from a persistent data store.
35     *
36     * @param string $key
37     *
38     * @return mixed
39     */
40    public function get($key);
41
42    /**
43     * Set a value in the persistent data store.
44     *
45     * @param string $key
46     * @param mixed  $value
47     */
48    public function set($key, $value);
49}
50