Spring RedisTemplate Scan

2024-10-30 16:10:48 3

keys 不能用, 那就只能用scan了

public static Set<String> scan(RedisTemplate<String, String> redisTemplate, String pattern) {
    return redisTemplate.execute((RedisCallback<Set<String>>) connection -> {
        Set<String> keysTmp = new HashSet<>();        
        try {            
            Cursor<byte[]> cursor = connection.scan(new ScanOptions.ScanOptionsBuilder()                    
                    .match(pattern).count(100).build());            
            while (cursor.hasNext()) {                
                keysTmp.add(new String(cursor.next(), StandardCharsets.UTF_8));            
            }        
        } catch (Exception e) {
            throw new RuntimeException(e);        
        }        
        return keysTmp;    
    });
}

链接是否需要关闭

org.springframework.data.redis.core.RedisCallback#doInRedis

文档说不需要关闭链接

游标是否需要关闭

jedis不需要

org.springframework.data.redis.core.ScanCursor#doClose

jedis关闭游标会间接关闭链接, 导致报错

lettuce还没测, 看网上有些人说可以关闭游标.

实际使用还是以源码为准, 做好覆盖测试吧

• spring
• redis