下面来一个朋友写的php实现redis数据库指定库号迁移,希望例子能给各位带来帮助.
redis普通的数据库迁移,只能整个redis save,或者利用主从,当然也可以安装一个redis-dump,不过比较麻烦,这里提供一种php的脚本,实现指定库号的迁移,其实也就是遍历根据存储类型,读出来,插入新库,效果是这样:
[root@localhost ~]# php 1.php 
1/407 
101/407 
201/407 
301/407 
401/407 
php实例代码如下:
keys('*'); $count = 0; $total = count($keys); foreach($keys as $key){ if(++$count % 100 == 1){ echo $count/$total\n; } $type = $from_redis->type($key); switch($type){ case redis::redis_string: $val = $from_redis->get($key); $to_redis->set($key, $val); break; case redis::redis_list: $list = $from_redis->lrange($key, 0, -1); foreach($list as $val){ $to_redis->rpush($key, $val); } break; case redis::redis_hash: $hash = $from_redis->hgetall($key); $to_redis->hmset($key, $hash); break; case redis::redis_zset: $zset = $from_redis->zrange($key, 0, -1, true); foreach($zset as $val=>$score){ $to_redis->zadd($key, $score, $val); } break; } } function redis_init($conf){ $redis = new redis(); preg_match('/^([^:]+)(:[0-9]+)?\\/(.+)?/', $conf, $ms); $host = $ms[1]; $port = trim($ms[2], ':'); $db = $ms[3]; $redis->connect($host, $port); $redis->select($db); return $redis; }