1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
<?php
/*
* This file is part of the Predis package.
*
* (c) 2009-2020 Daniele Alessandri
* (c) 2021-2025 Till Krüss
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
require __DIR__ . '/shared.php';
$key = null;
$client = new Predis\Client($single_server, [
'connections' => 'relay',
]);
/** @var Predis\Connection\RelayConnection $relay */
$relay = $client->getConnection();
// establish connection
$client->ping();
// register `FLUSH*` callback
$relay->onFlushed(
static function (Relay\Event $event) use (&$key) {
echo 'Redis was flushed, unsetting $key...' . PHP_EOL;
$key = null;
}
);
// register `INVALIDATE` callback
$relay->onInvalidated(
static function (Relay\Event $event) use (&$key) {
if ($event->key === 'library') {
echo "The `{$event->key}` key was invalidated, unsetting \$key..." . PHP_EOL;
$key = null;
}
}
);
// Write key to Redis
$client->set('library', mt_rand());
// Retrieve key once from Redis, then cached in Relay and $key
$key = $client->get('library');
while (true) {
echo '$key is: ' . var_export($key, true) . PHP_EOL;
// To trigger our event callbacks, we need to either interact with Relay:
$client->get(mt_rand());
// ... or alternatively dispatch events directly on Relay:
$relay->dispatchEvents();
sleep(1);
}
|
