PHPRedis Scan 没有 return 下一个游标

Question

在我的 Laravel 应用程序中，我曾经使用 predis/predis 包来使用 Redis 进行缓存。最近，按照文档中的建议，我已切换到 PhpRedis，但我使用 SCAN 的部分代码已损坏。在 predis 中，当我像这样使用扫描时：

Redis::scan(0,'match',$pattern //Test:*);

我曾经得到这样的结果：

[
     "253952",
     [
       "Test::296589",
       "Test::299112",
       "Test::332487",
       "Test::320358",
     ],
   ]

在这种情况下，253952 是下一个光标，我可以通过它再次扫描以获得下一批，如下所示 Redis::scan(253952,'match',$pattern //Test:*); 我可以在 while 循环中运行直到我到达终点：

$all_keys = [];
$keys = RedisManager::scan(0, 'match', $pattern);
while ($keys[0] !== "0") {
   foreach($keys[1] as $key) {
      $all_keys[] = $key;
   }
 $keys = RedisManager::scan($keys[0], 'match', $pattern);
}

自从我切换到 Phpredis 后，我无法再遍历列表。首先语法似乎不同：

$it=null;
$keys = RedisManager::scan($it,$pattern);

我不确定将 null 作为迭代器传递给第一个参数有什么意义。它也只是 returns:

[
 "Test::296589",
 "Test::299112"
]

这只是结果的一部分。它没有给我一切，也没有给我下一个光标。有人可以指导我正确的方向吗？

Answer 1

我在本地切换到 Phpredis 并使其与以下代码段一起使用。 documentation 指出扫描有不同的用法。

$redis = RedisManager::connection(); // initialize

$redis->setOption(\Redis::OPT_SCAN, \Redis::SCAN_RETRY); // please check documentation for other option
$keyList = [];
$iterator = null;

// you may update the count or match options according to your needs
while ($keys = $redis->scan($iterator, ['match' => 'Test:*', 'count' => 20])) {
    $iterator = $keys[0];
    foreach ($keys[1] as $key) {
        $keyList[] = $key;
    }
}

return $keyList;

在调试或开发时使用 monitor 命令会很有用。当该代码段正在运行时，它会打印出类似这样的内容；

1603241935.261667 [0 127.0.0.1:52536] "SCAN" "0" "COUNT" "20" "MATCH" "Test:*"
1603241935.262241 [0 127.0.0.1:52536] "SCAN" "48" "COUNT" "20" "MATCH" "Test:*"
1603241935.263421 [0 127.0.0.1:52536] "SCAN" "424" "COUNT" "20" "MATCH" "Test:*"
1603241935.264476 [0 127.0.0.1:52536] "SCAN" "260" "COUNT" "20" "MATCH" "Test:*"
1603241935.265508 [0 127.0.0.1:52536] "SCAN" "100" "COUNT" "20" "MATCH" "Test:*"
1603241935.266405 [0 127.0.0.1:52536] "SCAN" "460" "COUNT" "20" "MATCH" "Test:*"
1603241935.267137 [0 127.0.0.1:52536] "SCAN" "258" "COUNT" "20" "MATCH" "Test:*"
1603241935.268271 [0 127.0.0.1:52536] "SCAN" "402" "COUNT" "20" "MATCH" "Test:*"
1603241935.269344 [0 127.0.0.1:52536] "SCAN" "42" "COUNT" "20" "MATCH" "Test:*"
1603241935.270328 [0 127.0.0.1:52536] "SCAN" "198" "COUNT" "20" "MATCH" "Test:*"
1603241935.275193 [0 127.0.0.1:52536] "SCAN" "342" "COUNT" "20" "MATCH" "Test:*"
1603241935.276690 [0 127.0.0.1:52536] "SCAN" "286" "COUNT" "20" "MATCH" "Test:*"
1603241935.279386 [0 127.0.0.1:52536] "SCAN" "510" "COUNT" "20" "MATCH" "Test:*"
1603241935.281084 [0 127.0.0.1:52536] "SCAN" "81" "COUNT" "20" "MATCH" "Test:*"
1603241935.282568 [0 127.0.0.1:52536] "SCAN" "41" "COUNT" "20" "MATCH" "Test:*"
1603241935.284090 [0 127.0.0.1:52536] "SCAN" "185" "COUNT" "20" "MATCH" "Test:*"
1603241935.285949 [0 127.0.0.1:52536] "SCAN" "117" "COUNT" "20" "MATCH" "Test:*"
1603241935.288443 [0 127.0.0.1:52536] "SCAN" "253" "COUNT" "20" "MATCH" "Test:*"
1603241935.293034 [0 127.0.0.1:52536] "SCAN" "147" "COUNT" "20" "MATCH" "Test:*"
1603241935.294957 [0 127.0.0.1:52536] "SCAN" "155" "COUNT" "20" "MATCH" "Test:*"
1603241935.296113 [0 127.0.0.1:52536] "SCAN" "199" "COUNT" "20" "MATCH" "Test:*"
1603241935.296456 [0 127.0.0.1:52536] "SCAN" "247" "COUNT" "20" "MATCH" "Test:*"
1603241935.296723 [0 127.0.0.1:52536] "SCAN" "223" "COUNT" "20" "MATCH" "Test:*"

PHPRedis Scan 没有 return 下一个游标

PHPRedis Scan doesn't return the next cursor

laravel

redis

predis

phpredis